Question

1.Silk is derived from (a) cocoon (b) pupa (c) egg (d) moth​

Answer 1

Explanation:

As we know that protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons.

Hence Silk is derived from cocoon.

Answer 2

The answer of the given question

Explanation:

• The silk production process is understood or called “Sericulture”. The most effective silk is obtained from Mulberry silkworms which are reared in captivity (sericulture).  

• Silk could be a good fiber but strength gets lose when becomes wet and it has the moisture regain power.

• The pupa is that the transformation stage between larva & the adult. A cocoon is that the silk casing that a moth caterpillar spins around it before it turns into a pupa.

• Silk is obtained from the cocoon. Option (a) is that the correct answer.