Describe the process of cocoon formation.

1.	Describe the process of cocoon formation.
Answer» 1. The eggs of silkworm hatch into larvae. 2. The larvae develop into a caterpillar. 3. Caterpillar feeds on fresh mulberry leaves. 4. After its growth and moulting, the silkworm secretes a silk fibre to form cocoon. 5. The silk is a continuous filament comprising fibroin protein, secreted from salivary glands of silkworm and a gum called sericin, which cements the filaments. 6. The silk solidifies when it contacts the air. 7. The silkworm spins approximately one mile of filament and completely encloses itself in a cocoon in about two or three days.

Answer»

1. The eggs of silkworm hatch into larvae.

2. The larvae develop into a caterpillar.

3. Caterpillar feeds on fresh mulberry leaves.

4. After its growth and moulting, the silkworm secretes a silk fibre to form cocoon.

5. The silk is a continuous filament comprising fibroin protein, secreted from salivary glands of silkworm and a gum called sericin, which cements the filaments.

6. The silk solidifies when it contacts the air.

7. The silkworm spins approximately one mile of filament and completely encloses itself in a cocoon in about two or three days.

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