Identify the picture: A and B
Figure

(a) A-a tiny caterpillar hatching out of its egg; B- the pupa stage
(b) A-the pupa changing into a moth; B-the caterpillar eating mulberry leaves
(c) A-caterpillar completely covering itself with silk; B-the caterpillar eating mulberry leaves
(d) A-taking out threads from the cocoon; B-the resting stage of the caterpillar

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Solution

(c) A-caterpillar completely covering itself with silk; B-the caterpillar eating mulberry leaves

A female moth lays eggs. These eggs hatch into larvae called caterpillars. The caterpillars eat mulberry leaves constantly for four to six weeks as shown in figure B. A caterpillar moults many times by casting off its old skin, after which it stops growing. Then, it spins a white silk cocoon around itself as shown in figure A.

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Similar questions

Q. The resting stage of the caterpillar is
(a) larva.
(b) moulting.
(c) pupa.
(d) adult moth.

Question 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) Fibres 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.

Q. Caterpillar changes into a pupa inside nest.

Q. A dorsal horn is present on the ............ of mulberry silk worm (caterpillar).

In the life cycle of the silk moth,the caterpillar covers itself completely with silk fibre .This covering is known as __.

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