Fill in the blank:
The ............ get wrapped in silk fibre and form cocoon.
The $$\underline{caterpillars}$$ get wrapped in silk fibre and form cocoon.
Caterpillars or silkworms weave a net to hold
themselves and then secrete a fibre made of a protein that hardens on exposure to
air. This fibre becomes silk fibre. Caterpillars cover themselves in silk fibres and the covering is called cocoon.