Class VIII

16th August to 21st August 2021

Name of the chapter : (REDISCOVERING ASSAM) Timing: 35 minutes (2 periods)

PERIOD 1 PERIOD 2 STEP I: STEP I: Study the following topic from Rediscovering Assam: Study the following topic from Rediscovering Assam: Pg: 65-66 Pg: 66-67  Introduction  Life cycle of silkworm  Silk types  Peace silk - - STEP II: - Tasar silk Revise using the following Bullet points: -  Life cycle of silkworm includes the following four distinct stages:  Egg (ova) STEP II:  Larva Revise using the following Bullet points:  Pupa  : Rearing of silkworm for silk.  Adult (imago)  Main centre of industry is , a town in kamrup  Ova: Egg is the first stage of silkworm’s lifecycle. district of Assam.  Larva: It is the vegetative stage where growth takes place.  Silk types:  During growth, larva molt 4 times. (i) Muga silk  Period between successive molts is known as instar. (ii) Eri or Endi silk  Pupa: (iii) Tasar silk  Formation of cocoon starts in the pupa stage. (iv) Pat silk  Cocoon provides protection to the silkworm.  Muga silk:  Cocoons are shades of white, green and yellow depending on  Well known for golden brown and glossy texture. the type of silkworm.

 Obtained from domesticated silkworm- Antheraea assamensis.  Adult/ imago: It is the last stage of silkworm’s lifecycle.

 Larva of this moth feed on leaves of som (Machilus  It takes 2- 3 weeks for the pupa to metamorphose into adult. bombycina) and sualu (Litsaea polyantha).  It is the reproductive stage where adults mate and females lay  Eri or Endi silk: eggs and a new life cycle begins.  Obtained from domesticated silkworm-Philosamia rinini.

 Larva of this moth feed on leaves of castor oil plant (  Peace silk/ Vegetarian silk: communis) commonly called as era in assamese.  Eri or endi silk is known as peace silk.  Endi cocoon is open at one end for which the silk does not  Here, the silkworm is allowed to emerge from their cocoon to form a continuous filament. live out their full life cycle.  Commonly known as peace silk.  Best silk for warmth and therapeutic use.  Tasar silk:  Well known for having distinct light golden to dark brown to STEP III: copperish colour. Solve the questions as below:  Obtained from silkworm- Antheraea pernyi.  Larva of this moth feed on leaves of Asan and Arjun. 1. It is the first stage in the lifecycle of silkworm.  Oak Tasar is a fine variety of Tasar silk obtained from a. Egg silkworm- Antheraea proyeli which feed on natural oak leaves. b. Larva  Pat or mulberry silk: c. Pupa  Well known for white or off white coloured silk. d. Adult  Obtained from silkworm- Bombyx textor. Ans: a. Egg

 Larva of this moth feed on Mulberry leaves( species). 2. Which of the following statement/s are correct about Eri silk?

a. Eri silk is also known as peace silk. STEP III:

Solve the questions as below: b. Silkworm is allowed to die inside the cocoon.

c. Eri silk is also known as vegetarian silk.

1. Main centre of Assam silk industry is situated in: d. Both (a) and (c). a. Saukuchi Ans: d. Both (a) and (c). b. Sualkuchi

c. 3. Process of transformation of larvae into an adult is known as

d. a. Rearing b. Metamorphosis Ans: a. Sualkuchi c. Poultry

2. Sericulture is d. Ecology a. Rearing of fishes. Ans: b. Metamorphosis b. Rearing of poultry.

c. Rearing of Pigs. 4. It is the first stage in the lifecycle of silkworm.

d. Rearing of silkworm. a. Egg b. Larva Ans: d. Rearing of silkworm. c. Pupa

d. Adult

3. Muga silk is obtained from Ans: d. Adult a. Antheraea pernyi b. Antheraea proyeli c. Bombyx textor d. Antheraea assamensis. Ans: d. Antheraea assamensis

4. Larva of mulbeery silk feeds on a. Mulberry leaves b. castor oil plant c. leaves of Asan d. None of these Ans: a. Mulberry leaves

5. Which silk is also known as peace silk? a. Muga silk b. Eri or Endi silk c. Tasar silk d. Pat silk Ans: Eri or Endi silk

END OF DAY 1 END OF DAY 2