The insect that is not found in the wild state is

Mulberry, munga, oak and tussar, all the four varieties of silk are present in a single country. The country is

What is a silkworm?

Which of the following districts in Madhya Pradesh is mainly known for silk production?

Silk contains a protein known as

$A$ : Sericin is a gummy substance which is usually retained in case of silk till the yarn or fabric stage.
$R$ : Sericin gives protection during processing.