Silkworm Lifecycle and Sericulture

The video tutorial explains the lifecycle of silkworms and how silk is produced. It begins with an introduction to silk, followed by a detailed explanation of the silkworm's lifecycle, including the egg, larval, pupa, and adult stages. The process of cocoon formation and the extraction of silk threads from these cocoons are discussed. Finally, the video introduces sericulture, the practice of rearing silkworms for silk production.

What is the primary source of silk fibers?

• Cotton plant

• Synthetic materials

• Silkworm

• Wool from sheep

Which plant leaves are preferred by silkworms for laying eggs?

• Oak leaves

• Mulberry leaves

• Pine leaves

• Maple leaves

What is the scientific term for the growth stages of silkworm larvae?

• Pupation

• Metamorphosis

• Instar

• Chrysalis

What is the purpose of the cocoon in the silkworm's lifecycle?

• To serve as a food source

• To attract mates

• To protect the eggs

• To provide a resting phase for the larva

During which stage does the silkworm develop into an adult moth?

• Cocoon stage

• Pupa stage

• Larval stage

• Egg stage

How are silk threads obtained from the cocoon?

• By freezing the cocoon

• By drying the cocoon in the sun

• By cutting the cocoon open

• By boiling the cocoon

What happens to the silkworm after it becomes an adult moth?

• It dies inside the cocoon

• It lays eggs and continues the cycle

• It is used for silk production

• It becomes a butterfly

What is the main interest in the cocoon for silk production?

• Its color

• Its shape

• The nutrients it provides

• The silk threads it contains

What is the term for the practice of rearing silkworms for silk production?

• Apiculture

• Sericulture

• Horticulture

• Aquaculture

Why is sericulture considered a profitable industry?

• Because it is a government-subsidized activity

• Because silk is a high-demand luxury fabric

• Because it can be done without any equipment

• Because it requires minimal labor