Silk is the product of

Options

A. Salivary gland of the larva
B. Cuticle of the adult
C. The cuticle of the larva
D. Salivary gland of the adult

Answer

A

Explanation

The silk is a continuous filament fiber consisting of a fibroin protein secreted from two salivary glands in the heart of each larva and a gum called sericin which cements the two filaments together.