Question

Stages in the life cycle of silkworm are given below. Write them in sequential order. Pupa, silkworm, egg, silk moth

(A)Pupa → silkworm → egg → silk moth

(B) Silk moth → pupa → egg → silkworm

(C)Silk moth → egg → silkworm → pupa

(D)Pupa → silk moth → silkworm → egg

Answer 1

The silkworm is the caterpillar or larva of the Bombyx mori moth. The moth is significant as it makes silk. It no longer lives in the wild as their processing depends on humans. Silkworms eat mulberry leaves and grow.

Complete answer:

The life cycle of silkworms begins with silk moths. The primary female moth lays eggs which after incubating give out silkworm. Eggs hatch into the larvae called caterpillars or silkworms. The silkworm at that point feeds on mulberry leaves and becomes bigger in size, and when the caterpillar is ready to reach the next stage of its life cycle called pupa. After it first weaves a web to hang on to itself and moves its head from side to side. During these movements of the head, the caterpillar secretes fibre made from a protein that hardens when exposed to air and becomes a silk fibre. Soon the caterpillar fully covers themselves with silk fibres. This cover is known as a cocoon. Inside the cocoon silkworm changes into the pupa and afterward a moth and completely developed moth emerges from the cocoon. The order of their life cycle is Silkmoth → egg → silkworm → pupa.

After the final molt within the cocoon, the larva transforms into a brown, chitin-covered form called the pupa. Within the cocoon, the further growth of the moth continues. The silk yarn (thread) is made from the cocoon of the silk moth

Additional Information:

Bombyx mori , the homegrown silk moth, is an insect from the moth family Bombycidae. It is the nearest relative of Bombyx mandarina , the wild silk moth. The silkworm is the caterpillar or larva of a silk moth. It is an economically significant insect, being an essential producer of silk. Sericulture has become a significant cottage industry in nations, for example, Brazil, China, France, India, Italy, Japan, Korea, and Russia. Today, China and India are the two principle makers, with over 60% of the world's yearly production.

Thus, the correct answer is option (C) Silk moth → egg → silkworm → pupa

Note: Sericulture, or silk cultivation, is the development of silkworms to deliver silk. In spite of the fact that there are a few types of commercial silkworms, Bombyx mori (the caterpillar of the homegrown silkmoth) is the most broadly utilized and intensively examined silkworm. Silk was accepted to have originally been created in China.