Discuss the life cycle of silk moth.
The female silk moth lays eggs from which larvae emerge; they are called caterpillars or silkworms.
Before entering its next stage called pupa, a silkworm weaves a net to hold itself. The movements of the head of the silkworm secrete fibre made of protein which hardens on exposure to air and becomes silk fibre.
Soon, the caterpillar spins a covering called cocoon from silk fibres which protects the pupa. The further development of pupa into the moth continues inside the cocoon. An adult silk moth emerges from the cocoon.