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Sericulture MCQ and One Liner


Sericulture MCQ and one liner includes important multiple choice questions and description of the different species of silkworm, and production technology of silk including mulberry cultivation.

(1). Introduction
(2). Types of silk
(3). Properties of silk
(4). Species of silk
(5). Mulberry cultivation
(6). Post cocoon activities
(7). Silk products
(8). Multiple choice questions on sericulture
(9). Answer key

Also read: Sericulture Multiple Choice Questions

(1). Introduction

  • Sericulture is also known as silk farming.
  • Main product is silk.
  • Silk is a natural protein fiber.
  • Major use of silk is in textile industries.
  • Silk from Bombyx mori is considered as the best quality silk.
  • Bombyx mori is the scientific name of mulberry silkworm.
  • Sericulture is a cottage industry.
  • China and India are the major producer of silk in the world.

(2). Types of silk

  • Cultivated Silk: B. mori.
  • Wild Silk: Tussar silk.
  • Raw Silk.
  • Reeled silk: It is the continuous filament, ready for twisting.
  • Dupion Silk: Two silkworm spin their cocoon together.
  • Pure dye Silk.
  • Washable Silk: It does not require dry cleaning.
  • Khadi Silk: It is hand spun.
  • Ahimsa Silk: Killing of worm is not necessary.

(3). Properties of silk

  • Lustre.
  • Structure.
  • Strength.
  • Elasticity. 
  • Resiliency.
  • Abrasion resistance.
  • Drapability. 
  • Density: 
  • Absorbency.
  • Dimensional stability.

(4). Species of silk

  • Cultivated/Mulberry Silk
  • Tussah Silk/Wild Silk.
  • Muga Silk (North-East).
  • Eri Silk – (North-Eastern states and also produced in AP).

Also read: Junior Sericulture Officer (JSO): Work and Salary

4.1: Mulberry silkworm

Bombyx mori or mulberry silkworm is a domestic silk moth species. Wild species is B. mandarina.

Scientific name: Bombyx mori

  • Host: Its host is the leaves of white mulberry.
  • No natural production in case of B. mori.
OrderLepidoptera
FamilyBombycidae
GenusBombyx

4.1.1: Major groups

Univoltine1. One generation in year.
2. It prefers cold climate.
3. Univoltine is common in Europe.
4. Hibernation occurs during winter.
Bivoltine1. Two generations in a year.
2. Bivoltine is common in China and Japan.
3. It prefers slightly warmer climate.
Polyvoltine1. These are common in tropical climate.
2. Up to 8 generations in a year.

4.1.2:

  • Cis-jasmone is a mulberry odorant.
  • Osage orange is an other host of B. mori.
  • Proteolytic enzymes are harmful to the silk.
  • Heat treatment is adopted to kill worm inside the cocoon.

4.1.3:

  • Beauveria bassiana is a species of fungus.
  • It harms the body of larvae.
  • Milky disease affects ealry instar.
  • The cause of the milky disease is Bombyx mori nucleopolyhedrosis.
  • Pebrine disease is caused by Nosema bombycis.
  • Nosema disease can cause 100% death in larvae.
  • The cause of flacherie is a viral disease.
  • Flecherie harms the larval gut.
  • Muscardine is a collective disease.
  • The cause of muscardine is various species of fungus.

4.1.4:

  • B. mori spin cocoons after the 4th moult.
  • The fine silk is continuous.
  • Silk consists of fibroin and sericin.
  • Fibroin varies from 70-80%, and sericin varies from 20-30%.
  • Degumming is a process which removes sericin from the silk.

4.2: Tussar silk

  • Tussar silkworm is species moth.
  • It is found in Indian subcontinent.

Scientific name: Antheraea paphia

OrderLepidoptera
FamilySaturniidae
GenusAntheraea

4.2.1: Host plants

Major host plantsTerminalia tomentosa, Terminalia arjuna, Shorea robusta.
Other host plantsIndian jujube (Z. mauritiana), teak ( Tectona spp.), Mahua (M. indica).

4.2.2: Diseases

  • Pebrine is a major disease.
  • Antheraea mylitta cytoplasmic polyhedrosis virus causes significant loss.
  • Uzi fly parasitizes the larvae of tassar silkworm.

4.3: Eri silk

4.3.1:

  • Source: Samia ricini.
  • Distribution: Assam.
  • Host plant: Castor.
  • Properties: Coarser and cottony.
  • Importance: Killing of caterpillar is not necessary.
  • Major producer: Assam, Nagaland, Manipur, Arunachal Pradesh, Bihar Jharkhand, Chhattisgarh, Andhrapradesh.

4.3.2:

  • Cocoon is has open end.
  • This species is multivoltine.
  • Commerical product is chaddars.

4.4: Munga silk

  • Source: Antheraea assamensis.
  • Antheraea assamensis is semi-domesticated multivoltine silkworm.
  • Type: It is a wild species of silk.
  • Distribution: Assam.
  • Properties: It is very durable.
  • Silk has natural yellowish golden tint.
  • Commercial products are chaddars, mekhalas and sarees.

(5). Mulberry cultivation

  • Mulberry belongs to the family Moraceae.
  • Temperature: 24°C to 28°C.
  • Soil: Sandy loam.
  • Method of propagation: Semi hardwood cutting.
  • Age of mother plant: 8 months to 1 year.
  • Thickness of cutting: 10 to 12 mm  in diameter.
  • Length of cutting: 15 to 20 cm with 3 active buds.
  • Angle of cutting: 45°
  • Nursery bed style: Raised.
  • Treatment of cutting: Azospirillum culture.
  • Age of transplanting: 90 to 120 days.
  • Planting system: Paired row system.
  • Planting season: Monsoon.
  • Harvesting: Individual leaves.
  • Time of harvesting: Morning hours.
  • Packing of leaves: Gunny bags.
  • Rearing house: Excellent ventilation is important.
  • Chawki is young age silkworm.
  • We select 3rd or 4th leaf from the top.
  • The 3rd, 4th, and 5th instar are old larvae.

(6). Post cocoon activities

  • Selection of cocoon.
  • Stifling.
  • Cooking.
  • Brushing.
  • Reeling.
  • Re reeling.
  • Twisting.
  • Degumming and bleaching.
  • Dying.
  • Weaving.

(7). Silk products

  • Flower vase.
  • Interior decoration.
  • Flower pot.
  • Greetings cards.
  • Animal toys.
  • Garland.

(8). Multiple choice questions on sericulture

Question 01. Which is known as the silk in the gum?

(a). Raw silk.
(b). Dupion silk.
(c). Pure dye silk.
(d). Khadi silk.

Question 02. What is stifling?

(a). Spinning process of cocoon.
(b). Killing process of caterpillar inside the worm.
(c). Feeding process of caterpillar.
(d). None of the above.

Question 03. What is silk filature?

(a). It is a variety of cocoon.
(b). It is type of fibre.
(c). It is a type of cloth.
(d). It is silk factory.

Question 04. What is silk throwing?

(a). Silk throwing is twisting of silk stands.
(b). It is the elimination process of poor cocoons.
(c). It is the selection process of the best category of silk.
(d). None of the above.

Question 05. Deneir represents the weight of which product?

(a). Silk cocoon.
(b). Silk filament.
(c). Caterpillar.
(d). Adult moth.

Question 06. What is the process of degumming?

(a). Boiling of silk cocoon.
(b). Use of chemical agents.
(c). Sun drying of cocoon.
(d). All of the above.

Question 07. In which process a silk gains weight?

(a). Process of degumming.
(b). Process of weighting.
(c). Process of stifling.
(d). All of the above.

Question 08. What is the density of silk fibre?

(a). 0.64 gm/cubic centimeter.
(b). 2.64 gm/cubic centimeter.
(c). 1.64 gm/cubic centimeter.
(d). 3.64 gm/cubic centimeter.

Question 09. Pink mealy bug is a pest of which host plant?

(a). Castor plant.
(b). Sal tree.
(c). Mulberry plant.
(d). None of the above.

Question 10. Which is a reeling technology?

(a). Charka.
(b). Cottage basin.
(c). Multi end reeling technology.
(d). All of the above.

Also read: MCQ on Lac Culture (Questions)

(9). Answer key

1.a6.a
2.b7.b
3.d8.c
4.a9.c
5.b10.d

Silk cocoon image.


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