Question

Why is the silkworm called the useful insect​

Answer 1

Because Bombyx mori, the domestic silk moth, is an insect from the moth family Bombycidae. It is the closest relative of Bombyx mandarina, the wild silk moth. The silkworm is the larva or caterpillar of a silk moth. It is an economically important insect, being a primary producer of silk.

Answer 2

It produces the silk that use to make clothes