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NCERT Exemplar Solutions Class 7 Science Solutions for Fibre to Fabric - Exercise in Chapter 3 - Fibre to Fabric

Question 19 Fibre to Fabric - Exercise

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

(a) Eggs are warmed to a suitable temperature for the larvae to hatch from eggs.

(b) Fibers are taken out from the cocoon.

(c) After 25 to 30 days, the caterpillars stop eating and start spinning cocoons.

(d) The larvae/caterpillars or silkworms are kept in clean trays along with freshly chopped mulberry leaves.

(e) Female silk moths lay eggs.

(f) Cocoons are kept under the sun or boiled in water.

Answer:

(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) Fibers are taken out from the cocoon.

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