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Steps for the production of silk are given below in a jumbled order. Arrange them in their proper sequence. Eggs are warmed to a suitable temperature for the larvae to hatch from eggs. - Science

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Question

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.
Answer in Brief

Solution

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

shaalaa.com
Animal Fibre: Silk
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Chapter 3: Fibre to Fabric - SHORT ANSWER QUESTIONS [Page 19]

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NCERT Exemplar Science [English] Class 7
Chapter 3 Fibre to Fabric
SHORT ANSWER QUESTIONS | Q 19. | Page 19
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