(a) True

Silk moth is an insect which is responsible for yielding silk fibre. Silk moths lay eggs, from which larvae come out. These are called as caterpillars or silkworms. Thus we can say that silkworms are the caterpillars of silk moth.

(b) False

Wool fibre is obtained from varieties of animals such as sheep, yak, goats and camel. But in India generally sheep are reared for obtaining wool. Goat rearing for wool is also practices in India on a smaller scale but camel rearing for wool is very rare.

(c) False

Humans rear silkworms for obtaining silk. This practice of silkworms for obtaining silk is called “sericulture” and not silviculture. Silkworms spin the “silk fibres”. These fibres are then used for weaving silk clothes.

(d) True

Scouring is process of cleaning the removed hairs by washing into tanks for removing grease and dirt. After scouring, sorting is done which involves the separation of hairs of different textures.

(e) False

Wool fibres can be obtained from varieties of animals such as sheep, yak, goat and camels. Thus yak hairs can also be used to make woollen fabric. Thus the above statement is false.