Question

Scientific name of oak silkworm is _______
A. Bombyx mori
B. Antheraea paphia
C. Antheraea pernyi
D. Attacus rechinii

Answer 1

Hint: A material is made up of continuous strands called fibre. Fibre are of two types: natural and synthetic fibre. Natural fibres are obtained from plants and animals while synthetic fibres are man-made. Natural fibres examples are cotton, silk. Silk is a type of natural or animal fibre.

Complete step by step answer:
Silkworm is responsible for spinning of silk and is reared to get silk.
Life cycle of Silkworm
1. Egg: The egg is laid by a female moth which is mostly the size of small dots. A female moth lays more than 350 eggs at a single time. During spring, eggs hatch due to warmth in the air.
2. Silkworm: A hairy silkworm arises after the eggs crack. During this stage, the growth happens; they feed on mulberry leaves and consume large amounts of leaves for 30 days before going to the next stage.
3. Cocoon: In this silkworms spin a protective cocoon around itself. It is the size of a small cotton ball and composed of a single thread of silk.
4. Pupa: Pupa stage is a motionless stage. People kill pupa by plunging the cocoon into boiling water and unwind the silk thread.
5. Moth: Pupa changes into an adult moth. The female moth lays eggs after mating and the life cycle of silkworm begins again.
6. Bombyx is the silk moth, mulberry silk moth. Attacus rechinii is eri silkworm. Antheraea paphia is a tasar silkworm. Antheraea pernyi is oak silkworm.
The correct answer is Antheraea pernyi.

So, the correct answer is “Option C”.

Note:
Extraction of silk from cocoons is called processing of silk. It is done by exposing the cocoon to the sunlight. After the reeling of silk the process of unwinding of silk from a cocoon occurs. Silk thread is then bleached and fibre is spun into silk threads.