JKSSB Seed Examiner 2025 Solved Question Paper

Question 1

Which of the following statement is/ are correct about transportation of silkworm eggs
i. Supplied during eye spot stage
ii. Kept in black paper cover
iii. Exposure to direct sunlight
iv. Exposure to fumes, fertilizer
Choose the correct option:

Accepted Answer

Option A: i and ii. Silkworm eggs (dfls) are ideally transported during the early morning/cool hours at the eye spot (pinhead) stage packaged carefully inside ventilated boxes wrapped in black paper to ensure darkness and uniform embryonic development. Exposure to direct sunlight, chemical fumes, and fertilizers must be strictly avoided.

Question 2

Silk from silkworm is forced out in liquid form through openings

Accepted Answer

Option B: Spinnerets. Liquid silk synthesized by the paired labial silk glands passes through the common duct and is extruded through a specialized median opening called the spinneret located on the labium of the silkworm larva, which hardens into solid silk bave upon contact with air.

Question 3

Identify the correct statements with regard to the specifications of cuttings used as planting material for mulberry plantation in sericulture
i. 4-8 month old hardwood branches
ii. No specific diameter
iii. 18-20 cm long with a minimum of three buds
iv. Irregular ends
Choose the correct option:

Accepted Answer

Option C: i and iii. Standard mulberry cuttings for vegetative propagation are prepared from healthy 4-8 month old semi-hardwood branches, cut to a length of 18-20 cm possessing at least 3 active viable buds, with a clean slanting cut at the base (diameter 10-12 mm, pencil thickness). Thus, statements i and iii are correct.

Question 4

Ideal relative humidity for spinning cocoons

Accepted Answer

Option B: 60-70%. During the mounting and cocoon spinning stage, mature silkworms release substantial moisture while extruding liquid fibroin and voiding gut contents. An ideal relative humidity of 60-70% (and temperature around 24-25°C) along with gentle aeration is required to facilitate quick drying of the sericin gum and prevent defective stained cocoons.

Question 5

Consider the following pairs
1. Univoltine silkworms - i. Small cocoons, short filaments, robust larvae
2. Multivoltine silkworms - ii. Large body size, good quality cocoon filament
3. Bivoltine silkworms - iii. Mulberry silkworm
4. Domesticated silk - iv. Inferior cocoon quality
Which of above pairs are correctly matched

Accepted Answer

Option B: 1-ii, 2-i, 3-iv, 4-iii. Pair matching analysis:
- Univoltine silkworms (1) -> Large body size, long heavy cocoons, superior quality filament produced in temperate zones (ii)
- Multivoltine silkworms (2) -> Small cocoons, short filament, robust heat-tolerant larvae adapted to tropical climates (i)
- Domesticated silk (4) -> Mulberry silkworm (Bombyx mori) (iii)
Therefore, the correctly aligned permutation is 1-ii, 2-i, 3-iv, 4-iii (Option B).

Question 6

The whole weight of a single cocoon is influenced by
i. Silkworm species
ii. Rearing season
iii. Harvest conditions
iv. Efficiency
Choose the correct option:

Accepted Answer

Option A: i, ii and iii. Single cocoon weight is determined by biological factors such as the silkworm species/breed (i), environmental seasonal variations in temperature and leaf quality during the rearing season (ii), and harvesting time/handling conditions (iii). Efficiency is an operational outcome metric rather than a physical determinant. Thus, i, ii and iii (Option A) is correct.

Question 7

Fibroin in the Bombyx mori comprises a high content of the amino acids

Accepted Answer

Option B: Glycine and alanine. Silk fibroin is a crystalline structural fibrous protein primarily composed of simple repeating amino acid residues: Glycine (~43-45%), Alanine (~29-30%), and Serine (~12%), forming tight antiparallel beta-pleated sheet configurations.

Question 8

Which of the following statement is/ are correct about micrografting in mulberry
i. Shoot tip grafting
ii. Seed grafting
iii. Produce virus free plants
iv. In vitro technique
Choose the correct option:

Accepted Answer

Option C: i, iii and iv. Micrografting is an advanced in vitro tissue culture technique (iv) where a shoot tip / apical meristem scion is grafted onto an in vitro germinated seedling rootstock (i) to produce virus-free, disease-free true-to-type certified planting material (iii). It is not seed grafting. Hence, i, iii and iv (Option C) is correct.

Question 9

Consider the following pairs
1. Trichoderma viride - i. Variety
2. Cuttings - ii. Irrigation
3. CSR2 - iii. Collar rot
4. Flat bed method - iv. Propagation
Which of above pairs are correctly matched:

Accepted Answer

Option C: 1-iii, 2-iv, 3-i, 4-ii. Correct association of sericultural practices:
- Trichoderma viride (1) -> Biocontrol agent used against root rot / collar rot diseases in mulberry (iii)
- Cuttings (2) -> Vegetative propagation method for mulberry (iv)
- CSR2 (3) -> High-yielding bivoltine silkworm breed/variety (i)
- Flat bed method (4) -> Traditional bed layout for nursery/irrigation (ii)
Thus, Option C (1-iii, 2-iv, 3-i, 4-ii) is the correct match.

Question 10

How many days of safe period is advisable for utilization of leaf for silkworm rearing after chemical spray for disease management in mulberry?

Accepted Answer

Option D: 5. Following chemical fungicidal spray (such as Carbendazim or Dithane M-45) or systemic insecticide application in mulberry gardens, a minimum safe waiting period (withholding period) of 5 days (or up to 7-10 days depending on pesticide half-life) is strictly advised before harvesting leaves to prevent silkworm toxicity.

Question 11

Silk glands of silkworms are modified

Accepted Answer

Option B: Labial glands. The silk glands of the silkworm Bombyx mori are anatomically modified paired labial (salivary) glands that occupy a major portion of the caterpillar's body cavity and produce fibroin and sericin.

Question 12

Which of the following statement is/ are correct about mountages
i. For 100 dfls, about 30 to 40 chandrikes are required
ii. 800-900 worms per m2 are kept on a mountage
iii. Mountages kept under shade in well ventilated place
iv. Third instar larvae are transferred to a mountage
Choose the correct option:

Accepted Answer

Option A: i, ii and iii. For rearing from 100 dfls (approx. 40,000-50,000 worms), about 30 to 40 bamboo chandrikes/mountages are required (i). An optimal density of 800-900 worms/m2 is mounted to prevent double cocoons (ii). Mountages are placed under shade in a well-ventilated room at 24-25°C and 60-70% RH (iii). Statement iv is incorrect because fully mature fifth instar larvae are transferred to mountages, not third instar larvae. Thus, Option A (i, ii and iii) is correct.

Question 13

A Phytoecdysteroid for synchronized maturation of silkworms

Accepted Answer

Option C: Sampoorna. 'Sampoorna' is a commercial plant-derived phytoecdysteroid formulation developed by the Central Sericultural Research & Training Institute (CSRTI), Mysore, used by sericulturists to induce rapid, uniform, and synchronized maturation in fifth instar silkworm larvae.

Question 14

Silkworm eggs are supplied to farmers for commercial rearing on ________ day of oviposition in case of multivoltine eggs

Accepted Answer

Option A: 3rd. Multivoltine silkworm eggs (non-diapausing) complete embryonic development in 9-10 days at 25°C. To ensure safe transport before the critical eye-spot stage and allow farmers proper incubation time, eggs are supplied on the 3rd day of oviposition (or 3rd-4th day).

Question 15

Physical characteristics of cocoons are
i. Colour
ii. Reelability
iii. Shape
iv. Wrinkles
v. Raw silk percentage
Choose the correct option:

Accepted Answer

Option B: i, iii and iv. The external physical / morphological characteristics of cocoons observable on visual inspection are: Colour (white, yellow, greenish), Shape (oval, constricted, spherical), and Wrinkles/grains on the cocoon surface. In contrast, reelability and raw silk percentage are technological / post-reeling parameters. Hence, i, iii and iv (Option B) is correct.

Question 16

Soil sampling for mulberry cultivation is essential to
i. Understand rearing
ii. Understand soil health
iii. Optimize nutrient management
iv. Optimize silkworm species
Choose the correct option:

Accepted Answer

Option D: ii and iii. Soil testing and sampling in moriculture is conducted specifically to evaluate soil fertility status and soil health (ii) and to formulate balanced fertilizer recommendations / optimize nutrient management (iii). It does not directly determine silkworm rearing or breed selection. Thus, statements ii and iii (Option D) is correct.

Question 17

Consider the following pairs
1. Basic seed production - i. Productivity of parent silkworm population
2. Industrial seed production - ii. Offspring with desirable traits
3. Parental silkworm rearing - iii. Pure and vigorous silkworm breeds
4. Hybrid seed preparation - iv. Quality silkworm eggs
Which of above pairs are correctly matched?

Accepted Answer

Option C: 1-iii, 2-iv, 3-i, 4-ii. Seed production hierarchy in sericulture:
- Basic seed production (P3/P2/P1) (1) -> Multiplication of pure and vigorous parental silkworm breeds under high sanitation (iii)
- Industrial seed production (2) -> Mass multiplication of commercial quality silkworm eggs (dfls) for sericulturists (iv)
- Parental silkworm rearing (3) -> Maximizing productivity and viability of parent silkworm populations (i)
- Hybrid seed preparation (4) -> Crossing selected parental lines to generate vigorous hybrid offspring with desirable traits (ii)
Thus, Option C (1-iii, 2-iv, 3-i, 4-ii) is the correct match.

Question 18

In silkworm rearing, a group of eggs laid out by a silkworm moth which is examined and certified as disease free is called

Accepted Answer

Option C: dfl. In sericulture grainage, a batch of eggs laid by an individual mother moth that has been microscopically examined for Pebrine spores and certified free from disease is called a 'dfl' (disease-free laying).

Question 19

Which state is the largest producer of silk in India ?

Accepted Answer

Option A: Karnataka. Karnataka is by far the largest producer of raw silk in India, contributing nearly 45-50% of the country's total mulberry raw silk production (centered around Ramanagara, Mysuru, Mandya, and Kolar).

Question 20

What is the fertilizer schedule for rainfed mulberry cultivation

Accepted Answer

Option C: 100:50:50 kg NPK/ha/yr. The standard recommended fertilizer dose for rainfed mulberry cultivation is 100:50:50 kg NPK/ha/year (applied in two split doses coinciding with rains). By contrast, irrigated mulberry receives a higher dose of 300:120:120 kg NPK/ha/year.

Question 21

Examination of ________ is the primary method for early detection and disease control of Pebrine

Accepted Answer

Option C: Mother moth. Mother moth examination (Pasteur's method) is the cornerstone protocol in sericulture grainages: individual mother moths are homogenized and microscopically examined at 600x magnification to detect oval spores of Nosema bombycis before releasing their eggs as disease-free layings.

Question 22

Consider the following pairs
1. Eri silkworm - i. Oak
2. Muga silkworm - ii. Mulberry
3. Tasar silkworm - iii. Castor
4. Bombyx mori - iv. Som
Which of above pairs are correctly matched?

Accepted Answer

Option C: 1-iii, 2-iv, 3-i, 4-ii. Silkworms and their primary host plants:
- Eri silkworm (Samia ricini) (1) -> Castor (Ricinus communis) (iii)
- Muga silkworm (Antheraea assamensis) (2) -> Som and Soalu (Machilus bombycina) (iv)
- Tasar silkworm (Antheraea mylitta / A. proylei) (3) -> Asan, Arjun, and Oak (Quercus spp.) (i)
- Bombyx mori (4) -> Mulberry (Morus alba) (ii)
Hence, Option C (1-iii, 2-iv, 3-i, 4-ii) is correct.

Question 23

Point out the factors affecting oviposition and egg laying in silkworm
i. Weight of pupa
ii. Larval density
iii. Chandrikae
iv. Mountage
Choose the correct option:

Accepted Answer

Option A: i and ii. Fecundity and oviposition efficiency in silkworm female moths are directly influenced by the weight and nutritional reserves of the pupa (i) and the rearing larval density and nutritional feeding during the 5th instar (ii). Chandrikae/mountages are cocoon spinning devices used prior to pupation and not egg oviposition structures. Thus, statements i and ii (Option A) is correct.

Question 24

Primary pollinating agent in mulberry is

Accepted Answer

Option B: Wind. Mulberry (Morus spp.) is an anemophilous plant whose catkin flowers produce copious amounts of light, powdery pollen grains released by explosive stamen movement and carried primarily by wind.

Question 25

Acid treatment of hibernating eggs is to
i. Break diapause
ii. For artificial hatching
iii. To enhance germination
iv. For hardening
Choose the correct option:

Accepted Answer

Option A: i and ii. Hydrochloric acid (HCl) treatment (either hot acid treatment at 46.1°C with 1.075 sp. gr. HCl for 5-6 minutes or cold acid treatment) is standardly performed on bivoltine hibernating eggs to break diapause (i) and stimulate artificial hatching (ii) for commercial rearing.

Question 26

Central Sericultural Research and Training Institute is located at

Accepted Answer

Option B: Mysuru. The premier Central Sericultural Research and Training Institute (CSRTI), under the Central Silk Board, Ministry of Textiles, was established in 1961 and is located at Mysuru (Mysore), Karnataka.

Question 27

Which are the leading silk producers in global production ?

Accepted Answer

Option B: China and India. China and India are the two world leaders in raw silk production, together accounting for over 95% of total global raw silk output (China ranks first, followed by India as the second largest producer).

Question 28

White powdery patches on lower surface of leaves which later cover the entire leaf surface is the symptom of ________ disease in mulberry

Accepted Answer

Option B: Powdery mildew. White powdery patches on lower surface of leaves which later cover the entire leaf surface is the symptom of powdery mildew disease in mulberry, caused by the ascomycete fungus Phyllactinia dalbergiae.

Question 29

Advantage of IFS in mulberry cultivation

Accepted Answer

Option B: Enhanced yield. Integrated Farming Systems (IFS) combining mulberry cultivation and sericulture with dairy, vermicomposting, poultry, or intercropping optimize resource recycling, increase organic matter return, and result in enhanced yield and farm income.

Question 30

Bombyx mori is a ________ insect

Accepted Answer

Option D: Monophagous. The mulberry silkworm Bombyx mori is strictly monophagous; its larvae feed exclusively on fresh leaves of the mulberry genus (Morus spp.) attracted by specific biochemical volatiles such as citral, linalool, and beta-sitosterol.

Question 31

What does the levels P3, P2 and P1 indicate in sericulture?

Accepted Answer

Option A: Seed production. In the organized silkworm seed multiplication chain, P3 (Great Grand Parent / Breeder stock), P2 (Grand Parent / Foundation stock), and P1 (Parental stock) represent the successive tiers of basic silkworm seed production leading to commercial hybrid (F1) industrial seed.

Question 32

The respiratory system of the mulberry silkworm consists of
i. Spiracles
ii. Ventricles
iii. Trachea
iv. Vesicles
Choose the correct option:

Accepted Answer

Option C: i and iii. The respiratory system of the silkworm larva comprises 9 pairs of lateral spiracles (stigmata) through which air enters into a branching network of chitinous tracheal tubes (tracheae and tracheoles) delivering oxygen directly to tissues. Hence, i and iii (Option C) is correct.

Question 33

Cocoon quality is affected by
i. Mountage
ii. Chawki tray
iii. Cocoon weight
iv. Leaf cocoon ratio
Choose the correct option:

Accepted Answer

Option C: i and iii. Cocoon quality parameters (such as shape, cleanliness, defect rate, and build) are governed by the type and hygiene of the mountage (i) provided during spinning and the physical density and cocoon weight (iii). Thus, i and iii (Option C) is correct.

Question 34

Indicate the ideal plant spacing for mulberry

Accepted Answer

Option A: 90cm x 90cm. The traditional and most widely practiced standard square planting system for bushy mulberry cultivation under irrigated conditions across India (recommended by CSRTI) is 90 cm x 90 cm (3 ft x 3 ft), accommodating approximately 12,345 plants per hectare.

Question 35

Placing cocoons in ________ frees the silk filaments and makes them ready for reeling

Accepted Answer

Option B: Hot water. Cocoon cooking involves immersing cocoons in boiling / hot water (typically 90-95°C) to soften and partially dissolve the gummy sericin protein binding the fibroin brins, thereby swelling the shell and freeing the filament ends for smooth reeling.

Question 36

Planning for silkworm rearing involves
i. Rearing House Construction
ii. Feed Management
iii. Environmental Conditions
iv. Hygiene and Disease Prevention
v. Mounting and Harvesting
vi. Field crop quality
Choose the correct option:

Accepted Answer

Option A: i, ii, iii, iv, v and vi. Comprehensive planning for commercial silkworm rearing integrates all aspects: rearing house design/construction (i), mulberry leaf feed management (ii), microclimatic regulation of temperature/humidity (iii), strict disinfection and hygiene (iv), timely mounting and harvesting (v), and ensuring field crop leaf quality (vi). Thus, all items (i to vi, Option A) are correct.

Question 37

A Juvenile Hormone for Silkworms

Accepted Answer

Option A: Sruthi. 'Sruthi' (and 'Riddhi') is a formulation developed by CSRTI Mysore that acts as a synthetic juvenile hormone analogue (JHA) applied to 5th instar silkworms to prolong the feeding period by 24-36 hours, thereby substantially boosting cocoon shell weight and silk yield.

Question 38

What is the number of leaf harvests that can be generally made in a year in mulberry cultivation for silkworm rearing

Accepted Answer

Option B: 4-6. In tropical and sub-tropical intensive mulberry plantations under assured irrigation, 4 to 6 leaf harvests (corresponding to 5 commercial rearing crops per year) are routinely obtained following shoot harvesting or individual leaf plucking schedules.

Question 39

Consider the following pairs
1. Multivoltine hybrids - i. Early disease detection
2. Bivoltine hybrids - ii. 2% formalin for 10-15 minutes
3. Surface sterilisation of eggs - iii. FC1 x FC2
4. Forced eclosion of moths - iv. L14 x CSR2
Which of above pairs are correctly matched?

Accepted Answer

Option D: 1-iv, 2-iii, 3-ii, 4-i. Sericulture hybrid and grainage practice matches:
- Multivoltine hybrids (1) -> L14 x CSR2 (iv)
- Bivoltine hybrids (2) -> FC1 x FC2 (iii)
- Surface sterilisation of eggs (3) -> Dipping egg sheets in 2% formalin for 10-15 minutes (ii)
- Forced eclosion of moths (4) -> Early disease detection (i)
Thus, Option D (1-iv, 2-iii, 3-ii, 4-i) is correct.

Question 40

Identify reeling devices in sericulture sector
i. Chandrika
ii. Charkha
iii. Cottage basin
iv. Multi-end reeling machine
Choose the correct option:

Accepted Answer

Option B: ii, iii and iv. Silk reeling devices used to unwind silk bave from cocoons include the traditional country Charkha (ii), Cottage basin (iii), Multi-end reeling machine (iv), and modern Automatic reeling machines (ARM). Chandrika (i) is a mounting device made of bamboo used for cocoon spinning, not a reeling device. Thus, ii, iii and iv (Option B) is correct.

Question 41

Shelf rearing is recommended for silkworms in
A) 1st and 2nd instars
B) 2nd and 3rd instars
C) 3rd and 4th instars
D) 4th and 5th instars

Accepted Answer

Option D: 4th and 5th instars. Shelf rearing (or shoot rearing on shelves/racks) is recommended for late-age silkworms, specifically the 4th and 5th instars, due to their large size, huge feed consumption, and bed space requirements. Young chawki worms (1st and 2nd instars) are reared in chawki trays.

Question 42

Which of the following is responsible for the production and supply of basic silkworm seeds to the seed production centers
A) Central Silk Board
B) National Silkworm Seed Organization
C) Central Sericultural Research and Training Institute
D) Indian Silk Export Promotion Council

Accepted Answer

Option B: National Silkworm Seed Organization. The National Silkworm Seed Organization (NSSO), established in 1975 under the Central Silk Board, is specifically responsible for the production and supply of high-quality basic silkworm seeds (P3, P2, and P1 seeds) to state grainages and commercial seed production centres.

Question 43

What are the points considered while Mulberry saplings are taken from nursery for transplanting
i. Uproot saplings carefully without damage to roots
ii. Checked for root borne diseases
iii. Irrigate nursery beds one month before uprooting
iv. Saplings planted as early as possible
Choose the correct option:

Accepted Answer

Option D: i, ii and iv. When removing mulberry saplings from a nursery: saplings should be uprooted carefully without damaging roots (i), examined for root-knot nematodes or root rot diseases (ii), and transplanted to the main field as early as possible to avoid desiccation (iv). Nursery beds are irrigated 1-2 days before uprooting (not one month before), making iii incorrect.

Question 44

Identify a disease of mulberry
A) Blast
B) Tungro
C) Powdery mildew
D) Bud rot

Accepted Answer

Option C: Powdery mildew. Powdery mildew (caused by Phyllactinia dalbergiae / Phyllactinia corylea) is a prominent foliar fungal disease of mulberry, characterized by white powdery patches on the lower surface of leaves. Blast and Tungro affect rice, while Bud rot affects palms.

Question 45

Consider the following pairs
1. Young silkworm rearing - i. Variety
2. Decay of cuttings - ii. Irrigation
3. CSR2 - iii. collar rot
4. Flat bed method - iv. Soft succulent leaves with 80% moisture
Which of above pairs are correctly matched?
A) 1-i, 2-ii, 3-iii, 4-iv
B) 1-ii, 2-i, 3-iv, 4-iii
C) 1-iii, 2-iv, 3-i, 4-ii
D) 1-iv, 2-iii, 3-i, 4-ii

Accepted Answer

Option D: 1-iv, 2-iii, 3-i, 4-ii. Correct matching: 1. Young silkworm rearing requires soft succulent leaves with ~80% moisture (iv); 2. Decay of cuttings is caused by collar rot / fungal rots (iii); 3. CSR2 is a high-yielding productive bivoltine silkworm breed/variety (i); 4. Flat bed method is a method of irrigation (ii). Thus, 1-iv, 2-iii, 3-i, 4-ii (Option D) is correct.

Question 46

Presence of black scar on the silkworm body and maggot emergence hole at the tip of the cocoon are the typical symptoms of
A) Pebrine
B) Flacherie
C) Muscardine
D) Uzi fly

Accepted Answer

Option D: Uzi fly. Uzi fly (Exorista bombycis / Exorista sorbillans) is a serious tachinid parasitoid of silkworms. When the maggot penetrates the silkworm larva, a black necrotic scar appears at the entry wound. After the silkworm forms a cocoon, the mature maggot bores an escape hole at the tip of the cocoon, piercing it and ruining its commercial silk reeling value.

Question 47

In the process of pairing, depairing and oviposition of moths, optimum temperature of ______ and relative humidity of ______ are maintained.
A) 10 ± 1 °C, 40 ± 5%
B) 18 ± 1 °C, 60 ± 5%
C) 25 ± 1 °C, 75 ± 5%
D) 35 ± 1 °C, 90 ± 5%

Accepted Answer

Option C: 25 ± 1 °C, 75 ± 5%. In grainage operations, pairing (mating for ~3 hours), depairing, and oviposition (egg laying on egg sheets for 24 hours) are conducted under controlled optimum conditions of 25 ± 1 °C temperature and 75 ± 5% relative humidity under semi-darkness.

Question 48

Central Silk Board (Amendment) Act was passed by the Parliament and got published in the Gazette of India in the year
A) 2000
B) 2003
C) 2006
D) 2009

Accepted Answer

Option C: 2006. The Central Silk Board (Amendment) Act was enacted by the Indian Parliament and published in the Gazette of India in 2006 (Act No. 32 of 2006, notified September 14, 2006) to regulate silkworm seed quality, registration of grainages/seed producers, and seed certification standards across India.

Question 49

The uzi fly is a serious ______ of silkworm
A) Ectoparasite
B) Endoparasitoid
C) Contact pest
D) Systemic pest

Accepted Answer

Option B: Endoparasitoid. The uzi fly (Exorista bombycis) is an internal larval parasitoid (endoparasitoid) of the silkworm. Its maggots live and develop inside the haemocoel of silkworm larvae and pupae, consuming internal tissues before emerging and killing the host.

Question 50

Host plant of muga silkworms
A) Mulberry
B) Terminalia
C) Soalu
D) Castor

Accepted Answer

Option C: Soalu. Muga silkworm (Antheraea assamensis) is endemic to Assam and feeds primarily on Som (Persea bombycina) and Soalu (Litsea monopetala). Terminalia species host Tasar silkworms, Castor hosts Eri silkworms, and Mulberry hosts Bombyx mori.

Question 51

Mode of action of disinfectants in sericulture
i. Destroy pathogens
ii. Enhance resistance
iii. Disrupt microbial cells
iv. Enhance growth
Choose the correct option:

Accepted Answer

Option C: i and iii. Chemical disinfectants in sericulture (such as bleaching powder, formalin, chlorine dioxide, and Sanitech) act directly on microbial pathogens by denaturing vital proteins, oxidizing enzymes, and disrupting microbial cell membranes/cell walls (i and iii), thereby eliminating pathogens from rearing appliances and rooms.

Question 52

What is denier in silk production
A) Cocoon weight
B) Indicate whole cocoon
C) Indicate size of silk thread
D) Indicate cocoon shell

Accepted Answer

Option C: Indicate size of silk thread. Denier is an international unit of linear mass density used in silk and textile production to indicate the size, thickness, or fineness of silk yarn/thread. One denier is defined as the weight in grams of 9,000 meters of silk filament or yarn.

Question 53

Spraying Deltamethrin solution on walls and floor of cocoon storage room is a control measure against
A) Uzi fly
B) Dermestid beetle
C) Ants
D) Non insect pest

Accepted Answer

Option B: Dermestid beetle. Dermestid beetles (Dermestes ater / Dermestes cadaverinus) are destructive storage pests of dried cocoons, grainages, and stifled cocoons; their grubs bore into cocoons and consume pupae. Residual spraying of deltamethrin (0.028%) on storage room walls, floors, and crevices is a standard control measure against dermestid beetles.

Question 54

The proportion of ______ forms the basis for grading, inspection and fixation of cocoon price
A) Double cocoon to defective cocoon
B) Pierced cocoon to good cocoon
C) Good cocoon to defective cocoon
D) Stained cocoon to defective cocoon

Accepted Answer

Option C: Good cocoon to defective cocoon. In regulated cocoon markets, cocoon lots are sampled and sorted. The proportion of good cocoons to defective cocoons (defective cocoons include double, pierced, melt, stained, flimsy, and deformed cocoons) serves as the primary scientific basis for commercial grading, inspection, and fixation of cocoon price.

Question 55

In paired row mulberry plantation, plant to plant spacing in a row is
A) 30 cm
B) 60 cm
C) 90 cm
D) 120 cm

Accepted Answer

Option B: 60 cm. In the paired-row system of mulberry plantation [(90 + 150) x 60 cm geometry for mechanized cultivation], the spacing between two rows in a pair is 90 cm, the inter-space between pairs is 150 cm, and the plant-to-plant spacing within each row is 60 cm.

Question 56

Softness and flaccidity of larva is the major symptom of
A) Pebrine
B) Flacherie
C) Muscardine
D) Grasserie

Accepted Answer

Option B: Flacherie. Flacherie is a syndrome caused by bacterial infections (Bacillus, Streptococcus) often secondary to digestive disorders. The infected silkworms show loss of appetite, lethargy, softening and flaccidity of the larval body, vomiting, diarrhoea, and rotting.

Question 57

Commercial characteristics of cocoons are
i. Cocoon shape
ii. Cocoon weight
iii. Shell weight
iv. Filament length
v. Reelability
vi. Raw silk percentage
Choose the correct option:

Accepted Answer

Option A: i, ii, iii, iv, v and vi. All six listed parameters are essential commercial quality characteristics of silkworm cocoons: cocoon shape, cocoon weight, shell weight, filament length, reelability, and raw silk percentage. Thus, option A is correct.

Question 58

Multivoltine, univoltine, bivoltine are classification of silkworms
A) Based on ecoraces
B) Based on occurrence
C) Based on life cycles
D) Based on species

Accepted Answer

Option C: Based on life cycles. Silkworms are classified as univoltine, bivoltine, or multivoltine based on voltinism, which refers to the number of life cycles (generations) completed within a single year.

Question 59

Mulberry cuttings are protected from fungal disease by soaking in
A) Dithane
B) Chlorpyriphos
C) Carbaryl
D) Trichlorofen

Accepted Answer

Option A: Dithane. Mulberry hardwood cuttings are soaked before planting in a fungicide solution such as Dithane M-45 (Mancozeb) or Bavistin at 0.2% concentration to protect against soil-borne fungal pathogens causing cutting rot and collar rot.

Question 60

The method of fixing the cocoon price in cocoon markets is
A) Auction method
B) Fixed price
C) Variable price
D) Labelled price

Accepted Answer

Option A: Auction method. In regulated cocoon markets established under Silk Control Acts across India, cocoon lots brought by farmers are tested and priced transparently through the open auction method.

Question 61

Mulberry flowers are
A) Unisexual
B) Bisexual
C) Trisexual
D) Polysexual

Accepted Answer

Option A: Unisexual. Mulberry (Morus spp.) flowers are unisexual (imperfect), bearing either male (staminate) or female (pistillate) reproductive organs grouped into catkin inflorescences.

Question 62

Identify the variety of mulberry
A) Akshaya
B) CR1009
C) Kanva-2
D) Karuna

Accepted Answer

Option C: Kanva-2. Kanva-2 (also known as M-5) is a renowned high-yielding mulberry variety selected from open-pollinated seedlings of Morus indica in Karnataka.

Question 63

Infected larval body ruptures easily and turbid white haemolymph oozes out in the silkworm disease
A) Pebrine
B) Uzi fly
C) Muscardine
D) Grasserie

Accepted Answer

Option D: Grasserie. Grasserie (Nuclear Polyhedrosis, caused by BmNPV) is characterized by intersegmental swelling and shiny fragile skin that ruptures easily, releasing turbid milky-white haemolymph filled with polyhedral inclusion bodies.

Question 64

In pebrine detection for commercial silkworm egg production, moths forming a group are picked randomly of
A) 100
B) 200
C) 300
D) 400

Accepted Answer

Option A: 100. In commercial grainages for Pebrine detection, group mother moth testing pools representative samples of 100 moths picked randomly to examine for Nosema bombycis spores under a microscope.

Seed Examiner2025

📝 Solved Questions with Detailed Explanations100% Free • No Login Required

JKSSB — Seed Examiner (2025)

Which of the following statement is/ are correct about transportation of silkworm eggsi. Supplied during eye spot stageii. Kept in black paper coveriii. Exposure to direct sunlightiv. Exposure to fumes, fertilizerChoose the correct option:

Silk from silkworm is forced out in liquid form through openings

Identify the correct statements with regard to the specifications of cuttings used as planting material for mulberry plantation in sericulturei. 4-8 month old hardwood branchesii. No specific diameteriii. 18-20 cm long with a minimum of three budsiv. Irregular endsChoose the correct option:

Ideal relative humidity for spinning cocoons

The whole weight of a single cocoon is influenced byi. Silkworm speciesii. Rearing seasoniii. Harvest conditionsiv. EfficiencyChoose the correct option:

Fibroin in the Bombyx mori comprises a high content of the amino acids

Which of the following statement is/ are correct about micrografting in mulberryi. Shoot tip graftingii. Seed graftingiii. Produce virus free plantsiv. In vitro techniqueChoose the correct option:

Consider the following pairs1. Trichoderma viride - i. Variety2. Cuttings - ii. Irrigation3. CSR2 - iii. Collar rot4. Flat bed method - iv. PropagationWhich of above pairs are correctly matched:

How many days of safe period is advisable for utilization of leaf for silkworm rearing after chemical spray for disease management in mulberry?

Silk glands of silkworms are modified

A Phytoecdysteroid for synchronized maturation of silkworms

Silkworm eggs are supplied to farmers for commercial rearing on ________ day of oviposition in case of multivoltine eggs

Physical characteristics of cocoons arei. Colourii. Reelabilityiii. Shapeiv. Wrinklesv. Raw silk percentageChoose the correct option:

Soil sampling for mulberry cultivation is essential toi. Understand rearingii. Understand soil healthiii. Optimize nutrient managementiv. Optimize silkworm speciesChoose the correct option:

In silkworm rearing, a group of eggs laid out by a silkworm moth which is examined and certified as disease free is called

Which state is the largest producer of silk in India ?

What is the fertilizer schedule for rainfed mulberry cultivation

Examination of ________ is the primary method for early detection and disease control of Pebrine

Consider the following pairs1. Eri silkworm - i. Oak2. Muga silkworm - ii. Mulberry3. Tasar silkworm - iii. Castor4. Bombyx mori - iv. SomWhich of above pairs are correctly matched?

Point out the factors affecting oviposition and egg laying in silkwormi. Weight of pupaii. Larval densityiii. Chandrikaeiv. MountageChoose the correct option:

Primary pollinating agent in mulberry is

Acid treatment of hibernating eggs is toi. Break diapauseii. For artificial hatchingiii. To enhance germinationiv. For hardeningChoose the correct option:

Central Sericultural Research and Training Institute is located at

Which are the leading silk producers in global production ?

White powdery patches on lower surface of leaves which later cover the entire leaf surface is the symptom of ________ disease in mulberry

Advantage of IFS in mulberry cultivation

Bombyx mori is a ________ insect

What does the levels P3, P2 and P1 indicate in sericulture?

The respiratory system of the mulberry silkworm consists ofi. Spiraclesii. Ventriclesiii. Tracheaiv. VesiclesChoose the correct option:

Cocoon quality is affected byi. Mountageii. Chawki trayiii. Cocoon weightiv. Leaf cocoon ratioChoose the correct option:

Indicate the ideal plant spacing for mulberry

Placing cocoons in ________ frees the silk filaments and makes them ready for reeling

Planning for silkworm rearing involvesi. Rearing House Constructionii. Feed Managementiii. Environmental Conditionsiv. Hygiene and Disease Preventionv. Mounting and Harvestingvi. Field crop qualityChoose the correct option:

A Juvenile Hormone for Silkworms

What is the number of leaf harvests that can be generally made in a year in mulberry cultivation for silkworm rearing

Consider the following pairs1. Multivoltine hybrids - i. Early disease detection2. Bivoltine hybrids - ii. 2% formalin for 10-15 minutes3. Surface sterilisation of eggs - iii. FC1 x FC24. Forced eclosion of moths - iv. L14 x CSR2Which of above pairs are correctly matched?

Identify reeling devices in sericulture sectori. Chandrikaii. Charkhaiii. Cottage basiniv. Multi-end reeling machineChoose the correct option:

Shelf rearing is recommended for silkworms inA) 1st and 2nd instarsB) 2nd and 3rd instarsC) 3rd and 4th instarsD) 4th and 5th instars

Which of the following is responsible for the production and supply of basic silkworm seeds to the seed production centersA) Central Silk BoardB) National Silkworm Seed OrganizationC) Central Sericultural Research and Training InstituteD) Indian Silk Export Promotion Council

Identify a disease of mulberryA) BlastB) TungroC) Powdery mildewD) Bud rot

Presence of black scar on the silkworm body and maggot emergence hole at the tip of the cocoon are the typical symptoms ofA) PebrineB) FlacherieC) MuscardineD) Uzi fly

In the process of pairing, depairing and oviposition of moths, optimum temperature of ______ and relative humidity of ______ are maintained.A) 10 ± 1 °C, 40 ± 5%B) 18 ± 1 °C, 60 ± 5%C) 25 ± 1 °C, 75 ± 5%D) 35 ± 1 °C, 90 ± 5%

Central Silk Board (Amendment) Act was passed by the Parliament and got published in the Gazette of India in the yearA) 2000B) 2003C) 2006D) 2009

The uzi fly is a serious ______ of silkwormA) EctoparasiteB) EndoparasitoidC) Contact pestD) Systemic pest

Host plant of muga silkwormsA) MulberryB) TerminaliaC) SoaluD) Castor

Mode of action of disinfectants in sericulturei. Destroy pathogensii. Enhance resistanceiii. Disrupt microbial cellsiv. Enhance growthChoose the correct option:

What is denier in silk productionA) Cocoon weightB) Indicate whole cocoonC) Indicate size of silk threadD) Indicate cocoon shell

Spraying Deltamethrin solution on walls and floor of cocoon storage room is a control measure againstA) Uzi flyB) Dermestid beetleC) AntsD) Non insect pest

The proportion of ______ forms the basis for grading, inspection and fixation of cocoon priceA) Double cocoon to defective cocoonB) Pierced cocoon to good cocoonC) Good cocoon to defective cocoonD) Stained cocoon to defective cocoon

In paired row mulberry plantation, plant to plant spacing in a row isA) 30 cmB) 60 cmC) 90 cmD) 120 cm

Softness and flaccidity of larva is the major symptom ofA) PebrineB) FlacherieC) MuscardineD) Grasserie

Commercial characteristics of cocoons arei. Cocoon shapeii. Cocoon weightiii. Shell weightiv. Filament lengthv. Reelabilityvi. Raw silk percentageChoose the correct option:

Multivoltine, univoltine, bivoltine are classification of silkwormsA) Based on ecoracesB) Based on occurrenceC) Based on life cyclesD) Based on species

Mulberry cuttings are protected from fungal disease by soaking inA) DithaneB) ChlorpyriphosC) CarbarylD) Trichlorofen

The method of fixing the cocoon price in cocoon markets isA) Auction methodB) Fixed priceC) Variable priceD) Labelled price

Mulberry flowers areA) UnisexualB) BisexualC) TrisexualD) Polysexual

Identify the variety of mulberryA) AkshayaB) CR1009C) Kanva-2D) Karuna

Infected larval body ruptures easily and turbid white haemolymph oozes out in the silkworm diseaseA) PebrineB) Uzi flyC) MuscardineD) Grasserie

In pebrine detection for commercial silkworm egg production, moths forming a group are picked randomly ofA) 100B) 200C) 300D) 400

Hair-like projections in the silk fibre areA) LousinessB) DrowsinessC) UzinessD) Clumsiness

Identify cocoon filament defectsi. Loopsii. Fuzzinessiii. Nibsiv. PendulumChoose the correct option:

Separate rearing of young age silkworms isA) Chandrike rearingB) Cocoon rearingC) Charka rearingD) Chawki rearing

Mulberry plants areA) MonoeciousB) DioeciousC) Monoecious and dioeciousD) Monoecious or dioecious

Different methods of cocoon sortingA) ManualB) MechanicalC) Manual and mechanicalD) Machine based

Weak growth of plant and susceptibility to pests and diseases are deficiency symptom of ______ in mulberryA) NitrogenB) PhosphorousC) PotassiumD) Calcium

The process of removing the loose, outer layer of silk fibres from silk cocoons isA) DebeardingB) DeflossingC) DeviningD) Deflyering

The ease with which silk threads can be extracted from cocoons during reelingA) MountabilityB) ReedabilityC) ReliantabilityD) Reelability

Inflorescence of mulberry isA) PanicleB) CatkinC) TasselD) Aril

The ideal range of soil pH isA) 6.2 to 6.8B) 7.5 to 8.2C) 5.5 to 6.1D) 8.5 to 9.2

The optimal rearing house and relative humidity for silkworm rearing areA) 16-17 °C, 35-40%B) 35-36 °C, 55-60%C) 27-28 °C, 85-90%D) 39-40 °C, 65-70%

Green manure crops can be grown as an intercrop with mulberryi. Cowpeaii. Horsegramiii. Dhainchaiv. SunhempChoose the correct option:

Identify the chemical given to increase mulberry leaf quality and quantityA) KavachB) NuvanC) Zinc sulphateD) Glyphosate

Biological control agents used against mealybug in mulberryA) Rhinoceros beetleB) Ladybird beetleC) Redpalm weevilD) Mosquito bug

To control root knot, ______ is provided every four months during intercultivation operations.A) DithaneB) BionematicideC) KavashD) Bavistin

The weight of the silk obtained from the cocoon compared to the weight of entire cocoon isA) Filament percentageB) Raw silk percentageC) Defect percentageD) Perfect percentage

Sporadic pest of mulberryA) White flyB) Hairy caterpillarC) Gall midgeD) Panicle bug

Number of larval stages in the life of silkworms before they undergo cocooning to form pupaeA) 5B) 4C) 3D) 6

Which of the following statement is/ are correct about transportation of silkworm eggs
i. Supplied during eye spot stage
ii. Kept in black paper cover
iii. Exposure to direct sunlight
iv. Exposure to fumes, fertilizer
Choose the correct option:

Identify the correct statements with regard to the specifications of cuttings used as planting material for mulberry plantation in sericulture
i. 4-8 month old hardwood branches
ii. No specific diameter
iii. 18-20 cm long with a minimum of three buds
iv. Irregular ends
Choose the correct option:

The whole weight of a single cocoon is influenced by
i. Silkworm species
ii. Rearing season
iii. Harvest conditions
iv. Efficiency
Choose the correct option:

Which of the following statement is/ are correct about micrografting in mulberry
i. Shoot tip grafting
ii. Seed grafting
iii. Produce virus free plants
iv. In vitro technique
Choose the correct option:

Consider the following pairs
1. Trichoderma viride - i. Variety
2. Cuttings - ii. Irrigation
3. CSR2 - iii. Collar rot
4. Flat bed method - iv. Propagation
Which of above pairs are correctly matched:

Physical characteristics of cocoons are
i. Colour
ii. Reelability
iii. Shape
iv. Wrinkles
v. Raw silk percentage
Choose the correct option:

Soil sampling for mulberry cultivation is essential to
i. Understand rearing
ii. Understand soil health
iii. Optimize nutrient management
iv. Optimize silkworm species
Choose the correct option:

Consider the following pairs
1. Eri silkworm - i. Oak
2. Muga silkworm - ii. Mulberry
3. Tasar silkworm - iii. Castor
4. Bombyx mori - iv. Som
Which of above pairs are correctly matched?

Point out the factors affecting oviposition and egg laying in silkworm
i. Weight of pupa
ii. Larval density
iii. Chandrikae
iv. Mountage
Choose the correct option:

Acid treatment of hibernating eggs is to
i. Break diapause
ii. For artificial hatching
iii. To enhance germination
iv. For hardening
Choose the correct option:

The respiratory system of the mulberry silkworm consists of
i. Spiracles
ii. Ventricles
iii. Trachea
iv. Vesicles
Choose the correct option:

Cocoon quality is affected by
i. Mountage
ii. Chawki tray
iii. Cocoon weight
iv. Leaf cocoon ratio
Choose the correct option:

Planning for silkworm rearing involves
i. Rearing House Construction
ii. Feed Management
iii. Environmental Conditions
iv. Hygiene and Disease Prevention
v. Mounting and Harvesting
vi. Field crop quality
Choose the correct option:

Consider the following pairs
1. Multivoltine hybrids - i. Early disease detection
2. Bivoltine hybrids - ii. 2% formalin for 10-15 minutes
3. Surface sterilisation of eggs - iii. FC1 x FC2
4. Forced eclosion of moths - iv. L14 x CSR2
Which of above pairs are correctly matched?

Identify reeling devices in sericulture sector
i. Chandrika
ii. Charkha
iii. Cottage basin
iv. Multi-end reeling machine
Choose the correct option:

Shelf rearing is recommended for silkworms in
A) 1st and 2nd instars
B) 2nd and 3rd instars
C) 3rd and 4th instars
D) 4th and 5th instars

Which of the following is responsible for the production and supply of basic silkworm seeds to the seed production centers
A) Central Silk Board
B) National Silkworm Seed Organization
C) Central Sericultural Research and Training Institute
D) Indian Silk Export Promotion Council

Identify a disease of mulberry
A) Blast
B) Tungro
C) Powdery mildew
D) Bud rot

Presence of black scar on the silkworm body and maggot emergence hole at the tip of the cocoon are the typical symptoms of
A) Pebrine
B) Flacherie
C) Muscardine
D) Uzi fly

In the process of pairing, depairing and oviposition of moths, optimum temperature of and relative humidity of are maintained.
A) 10 ± 1 °C, 40 ± 5%
B) 18 ± 1 °C, 60 ± 5%
C) 25 ± 1 °C, 75 ± 5%
D) 35 ± 1 °C, 90 ± 5%

Central Silk Board (Amendment) Act was passed by the Parliament and got published in the Gazette of India in the year
A) 2000
B) 2003
C) 2006
D) 2009

The uzi fly is a serious ______ of silkworm
A) Ectoparasite
B) Endoparasitoid
C) Contact pest
D) Systemic pest

Host plant of muga silkworms
A) Mulberry
B) Terminalia
C) Soalu
D) Castor

Mode of action of disinfectants in sericulture
i. Destroy pathogens
ii. Enhance resistance
iii. Disrupt microbial cells
iv. Enhance growth
Choose the correct option:

What is denier in silk production
A) Cocoon weight
B) Indicate whole cocoon
C) Indicate size of silk thread
D) Indicate cocoon shell

Spraying Deltamethrin solution on walls and floor of cocoon storage room is a control measure against
A) Uzi fly
B) Dermestid beetle
C) Ants
D) Non insect pest

The proportion of ______ forms the basis for grading, inspection and fixation of cocoon price
A) Double cocoon to defective cocoon
B) Pierced cocoon to good cocoon
C) Good cocoon to defective cocoon
D) Stained cocoon to defective cocoon

In paired row mulberry plantation, plant to plant spacing in a row is
A) 30 cm
B) 60 cm
C) 90 cm
D) 120 cm

Softness and flaccidity of larva is the major symptom of
A) Pebrine
B) Flacherie
C) Muscardine
D) Grasserie

Commercial characteristics of cocoons are
i. Cocoon shape
ii. Cocoon weight
iii. Shell weight
iv. Filament length
v. Reelability
vi. Raw silk percentage
Choose the correct option:

Multivoltine, univoltine, bivoltine are classification of silkworms
A) Based on ecoraces
B) Based on occurrence
C) Based on life cycles
D) Based on species

Mulberry cuttings are protected from fungal disease by soaking in
A) Dithane
B) Chlorpyriphos
C) Carbaryl
D) Trichlorofen

The method of fixing the cocoon price in cocoon markets is
A) Auction method
B) Fixed price
C) Variable price
D) Labelled price

Mulberry flowers are
A) Unisexual
B) Bisexual
C) Trisexual
D) Polysexual

Identify the variety of mulberry
A) Akshaya
B) CR1009
C) Kanva-2
D) Karuna

Infected larval body ruptures easily and turbid white haemolymph oozes out in the silkworm disease
A) Pebrine
B) Uzi fly
C) Muscardine
D) Grasserie

In pebrine detection for commercial silkworm egg production, moths forming a group are picked randomly of
A) 100
B) 200
C) 300
D) 400

Hair-like projections in the silk fibre are
A) Lousiness
B) Drowsiness
C) Uziness
D) Clumsiness

Identify cocoon filament defects
i. Loops
ii. Fuzziness
iii. Nibs
iv. Pendulum
Choose the correct option:

Separate rearing of young age silkworms is
A) Chandrike rearing
B) Cocoon rearing
C) Charka rearing
D) Chawki rearing

Mulberry plants are
A) Monoecious
B) Dioecious
C) Monoecious and dioecious
D) Monoecious or dioecious

Different methods of cocoon sorting
A) Manual
B) Mechanical
C) Manual and mechanical
D) Machine based

Weak growth of plant and susceptibility to pests and diseases are deficiency symptom of ______ in mulberry
A) Nitrogen
B) Phosphorous
C) Potassium
D) Calcium

The process of removing the loose, outer layer of silk fibres from silk cocoons is
A) Debearding
B) Deflossing
C) Devining
D) Deflyering

The ease with which silk threads can be extracted from cocoons during reeling
A) Mountability
B) Reedability
C) Reliantability
D) Reelability

Inflorescence of mulberry is
A) Panicle
B) Catkin
C) Tassel
D) Aril

The ideal range of soil pH is
A) 6.2 to 6.8
B) 7.5 to 8.2
C) 5.5 to 6.1
D) 8.5 to 9.2

The optimal rearing house and relative humidity for silkworm rearing are
A) 16-17 °C, 35-40%
B) 35-36 °C, 55-60%
C) 27-28 °C, 85-90%
D) 39-40 °C, 65-70%

Green manure crops can be grown as an intercrop with mulberry
i. Cowpea
ii. Horsegram
iii. Dhaincha
iv. Sunhemp
Choose the correct option:

Identify the chemical given to increase mulberry leaf quality and quantity
A) Kavach
B) Nuvan
C) Zinc sulphate
D) Glyphosate

Biological control agents used against mealybug in mulberry
A) Rhinoceros beetle
B) Ladybird beetle
C) Redpalm weevil
D) Mosquito bug

To control root knot, ______ is provided every four months during intercultivation operations.
A) Dithane
B) Bionematicide
C) Kavash
D) Bavistin

The weight of the silk obtained from the cocoon compared to the weight of entire cocoon is
A) Filament percentage
B) Raw silk percentage
C) Defect percentage
D) Perfect percentage

Sporadic pest of mulberry
A) White fly
B) Hairy caterpillar
C) Gall midge
D) Panicle bug

Number of larval stages in the life of silkworms before they undergo cocooning to form pupae
A) 5
B) 4
C) 3
D) 6

Advantages of 3M plantation system for mulberry cultivation
i. Optimize plant density
ii. Easy mechanization
iii. Suitable for large-scale mulberry cultivation
iv. Enhances leaf production
Choose the correct option:

Mulberry saplings will be ready for transplanting to main field by ______ months after planting in nursery
A) 2
B) 4
C) 6
D) 8

Incubation of silkworm eggs should be done in a room with Temperature and Relative Humidity of
A) 25 °C and 100%
B) 15 °C and 50%
C) 25 °C and 80%
D) 35 °C and 100%

Arrange the steps in silk reeling
i. Boiling
ii. Sorting
iii. Brushing
iv. Stifling
v. Re-reeling
vi. Reeling
Choose the correct option:

Irrigation system most suited for mulberry
A) Drip irrigation
B) Sprinkler irrigation
C) Furrow irrigation
D) Subsurface irrigation

Seed treatment for breaking dormancy
i. Cold stratification
ii. Gibberellic acid treatment
iii. Mechanical scarification
iv. Acid treatment
Choose the correct option:

Point out the bio-formulation for effective and ecofriendly management of root rot diseases of mulberry in nursery stage
A) Raksha
B) Ayar
C) Sampoorna
D) Poorva

Nutritional deficiency in silkworm can lead to
i. Stunted growth
ii. Reduced cocoon weight
iii. Defective black boxing
iv. Reduced silk filament length
Choose the correct option:

Methods of cocoon stifling are
i. Sun drying
ii. Steam stifling
iii. Hot air drying
iv. Cold air drying
Choose the correct option:

Physiological basis influencing rooting of cuttings in mulberry
i. Gibberellic acid
ii. Peroxidase
iii. Dehydrogenase
iv. Auxins
Choose the correct option:

In nursery beds of mulberry, using ______ reduces weed competition and enhances sapling vigour
A) Nursery implements
B) Polythene sheets
C) Ridges and furrows
D) Transplanting

Arrange the following in chronological order
i. National Silkworm Seed Organization
ii. Central silk board Act
iii. Central Sericultural Research and Training Institute
iv. Central Silk Board
Choose the correct option:

Identify the viral disease of silkworm
A) Pebrine
B) Muscardine
C) Aspergillosis
D) Grasserie

The process of transferring of newly hatched larvae from egg sheet to rearing seat is called
A) Aligning
B) Brushing
C) Catting
D) Elating

Which of the following statement is/ are correct about using mist chamber in hardening mulberry plants
i. Maintain high humidity
ii. Reduce diseases
iii. Encourages root initiation
iv. Reduce nutrient use
Choose the correct option:

Plant growth regulator used to enhance rooting in mulberry cuttings
A) Indole-3-acetic acid
B) Citric acid
C) Sodium benzoate
D) Acetic acid

Purpose of pruning in mulberry
i. To facilitate mechanization
ii. To maintain in a state of vigorous growth
iii. To get good quality leaves
iv. Increase silkworm oviposition
Choose the correct option:

Poor development of plant and root system is caused due to the deficiency of ______ in mulberry plants
A) Nitrogen
B) Phosphorous
C) Potassium
D) Calcium

Which of the following statement is/ are correct about pesticide residue in mulberry leaves
i. Promote silkworm growth
ii. Reduce silkworm feeding
iii. Encourages silkworm oviposition
iv. Reduce silk quality
Choose the correct option:

Which of the following statement is/ are correct about juvenile hormone analogues
i. Prolong larval stages
ii. Improve cocoon yield
iii. Carbozan
iv. Improve silk yield
Choose the correct option:

Disinfectants used to prevent the incidence of silkworm diseases in silkworm rearing are
A) Vijetha
B) Vanaja
C) Vanitha
D) Vyothi

Silkworm harvesting method ______ involves shaking of the mulberry shoots containing matured silkworms over a plastic sheet
A) Jauhar method
B) Jobrai method
C) Jugal method
D) Juvenile method

What is spacing followed for raising cuttings in nursery bed
A) 10 cm x 10 cm
B) 20 cm x 10 cm
C) 30 cm x 20 cm
D) 40 cm x 30 cm

Non insect pests of mulberry
i. Mites
ii. Snails
iii. Nematodes
iv. Bugs
Choose the correct option:

Which of the following statement is/ are correct about cocoon transportation bags
i. Promote stifling
ii. HDPE bags
iii. Good aeration
iv. Disinfected easily
Choose the correct option: