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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

Write about any three uses of silk. - Science

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Question

Write about any three uses of silk.

Answer in Brief
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Solution

  1. Silk has natural beauty and elegance.
  2. It gives comfort in warm weather and warmth during colder months.
  3. It is used in the manufacture of classical and high fashion clothes, modern dresses particularly silk sarees, the elegant of beautiful dresses.
  4. It is also used in household for making wall hangings, curtains, rugs and carpets.
  5. It is also being used in the manufacture of surgical threads for sutures.
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Animal Fibre: Silk
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Chapter 5: Animals in Daily Life - Evaluation [Page 91]

APPEARS IN

Samacheer Kalvi Science - Term 3 [English] Class 7 TN Board
Chapter 5 Animals in Daily Life
Evaluation | Q VII. 2. | Page 91

RELATED QUESTIONS

The silkworm is (a) a caterpillar, (b) a larva. Choose the correct option


Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.


Out of the following, which are the two terms related to silk production?

Sericulture, floriculture, moriculture, apiculture and silviculture

Hints:

(1) Silk production involves cultivation of mulberry leaves and rearing silkworms.

(2) Scientific name of mulberry is Morus alba.


Match the words of Column I with those given in Column II:

Column I Column II
Scouring Yields silk fibres
Mulberry leaves Wool yielding animal
Yak Food of silk worm
Cocoon Reeling
  Cleaning sheared skin

A natural fibre obtained by boiling cocoons is called ______.


The cultivation and production of silk is known as ______.


Define – Sericulture


Who invented the Ahimsa silk?


Write about Ahimsa Silk.


Silk fibre is obtained from ______.


The term sericulture is used for ______.


Some words related to silk are jumbled up. Write them in their correct form.

TURECULRISE


Some words related to silk are jumbled up. Write them in their correct form.

BELMURRY


Some words related to silk are jumbled up. Write them in their correct form.

RINGLEE


Steps for the production of silk are given below in a jumbled order. Arrange them in their proper sequence.

  1. Eggs are warmed to a suitable temperature for the larvae to hatch from eggs.
  2. Fibres are taken out from the cocoon.
  3. After 25 to 30 days, the caterpillars stop eating and start spinning cocoons.
  4. The larvae/caterpillars or silkworms are kept in clean trays along with freshly chopped mulberry leaves.
  5. Female silk moths lay eggs.
  6. Cocoons are kept under the sun or boiled in water.

Complete the paragraph related to the life history of silk moth by filling in the blanks.

The ___(a)___ silk moth lays ___(b)___, from which hatch ___(c)___ called ___(d)___ or ___(e)___. They grow in size and when the caterpillar is ready to enter the next stage of its life history called ___(f)___, it first weaves a covering to hold itself, which is known as ___(g)___.


India stands ______ in silk production in the world.


The larva of a silkworm is called ______.


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