Question

cocoon is-a. the fibre cover spun by the silk larva around its body on changing into pupa state. b. the stage of larva. c. both a andb d.none of this ​

Answer 1

Answer:

The cocoon is a protective casing spun from silk. - Inside the cocoon, the silkworm changes into a pupa, the stage between larvae and adult moths. - After around two weeks, the pupa emerges from the cocoon as an adult moth.

Explanation:

Answer 2

Explanation:

hey mate

Cocoon formation starts after copulation when ovary matures. A membrane is secreted around the clitellum by membrane secreting glands. ... The structure now is called cocoon. Inside the cocoon one sperm get fertilized with ova to form zygote.When a silkworm has eaten enough, it constructs a cocoon made out of silk fibers, and inside that cocoon it turns into a pupa. After many days, a fully formed adult silkworm moth emerges through a spit-soaked opening in the bottom of a cocoon.Silkworms are the offspring of moths . They spew out thread from tiny holes in their jaws, which they use to spin into their egg-bearing cocoons. This entire production takes a mere 72 hours, during which time they produce between 500-1200 silken threads.

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