The silkworm is
- a caterpillar
- a larva.
Choose the correct option.
- (a)
- (b)
- both (a) and (b)
- neither (a) nor (b)
Correct Answer: (iii) both (a) and (b)
Explanation: The silkworm is a caterpillar and a larva. The production of silk and rearing of silkworms is called sericulture.
The life cycle of the silk moth:
- The female silk moth lays eggs.
- When an egg hatches, a tiny caterpillar crawls out. This is the silkworm, or larva. The silkworm feeds on mulberry leaves and grows.
- When it is ready to enter the next stage in its life cycle, it first weaves a net to hold itself. It then secretes a fibre made of proteins, which hardens on exposure to air. This is the silk fibre. It covers itself completely with this fibre, to form the cocoon.
- At this stage, the larva is called a pupa. The pupa grows and changes inside the cocoon.
- A few weeks later, the cocoon opens and an adult moth comes out.
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