Silk Moth Life Cycle and Sericulture

This module covers sericulture, the process of producing silk by rearing silkworms. It explains the stages from egg laying by the silk moth to the extraction of silk threads. The process includes hatching of eggs into larvae, feeding on mulberry leaves, cocoon formation, and finally, silk extraction. The best silk is obtained from Bombyx mori. The video also highlights the importance of silk in various applications, such as clothing and furnishings.

What is silk commonly referred to as due to its luster and drape?

• The King of Fabrics

• The Queen of Fibres

• The Emperor of Textiles

• The Prince of Materials

Which species of silk moth is known for producing the best variety of silk?

• Antheraea mylitta

• Samia cynthia

• Attacus atlas

• Bombyx mori

What is the first step in the sericulture process?

• Extraction of silk threads

• Formation of cocoons

• Laying of eggs by the silk moth

• Feeding larvae with mulberry leaves

How long are the eggs incubated before they hatch into larvae?

• 25 days

• 15 days

• 10 days

• 20 days

What do the larvae feed on to grow into adult larvae?

• Oak leaves

• Bamboo shoots

• Mulberry leaves

• Pine needles

How long does it take for the larvae to grow into adult larvae?

• 8-10 weeks

• 6-8 weeks

• 4-6 weeks

• 2-3 weeks

What is the protective case formed by the larvae called?

• Chrysalis

• Cocoon

• Nest

• Shell

What transformation occurs inside the cocoon?

• Larvae to beetle

• Larvae to butterfly

• Larvae to caterpillar

• Larvae to adult moth

Why are the silk moths killed before they emerge from the cocoon?

• To improve silk quality

• To increase silk production

• To preserve the silk thread

• To prevent them from flying away

What is done to the cocoons to extract silk threads?

• They are boiled in hot water

• They are dried

• They are crushed

• They are frozen