Question

when caterpillar completely covers it self by silk fibers and turns into pupa this covering is known as______?​

Answer 1

Answer:

integument

integumentThe covering around the caterpillar is integument. As it grows, the caterpillar changes its integument through a process called molting. The integument is protected by hairs, which have sensory function and sometimes have stinging cells.

Answer 2

During these movements of head, the caterpillar secretes fibre made of a protein which hardens on exposure to air and becomes silk fibre. The caterpillar completely covers itself by silk fibres and turns into pupa. This covering is known as Cocoon. Silk fibres are used for weaving silk cloth.