Important Questions Test: Fibre To Fabric - Class 7 MCQ

Silk is obtained from cocoon. Wool is obtained from fleece of sheep.

In ancient times people used animal skin, vines and leaves for clothing.

Blood pressure is due to the disorder of health.

Silk fibres are obtained from cocoons of silkworms.

Woollen clothes help us to keep warm on a cold day.

Silk fibre is obtained from pupa stage.

Woollen clothes are made from woollen fibre, that is obtained from fleece of sheep.

It is insect repellent. As Naphthalene balls directly converted into gas from the solid state, it strongly repel insect from coming near the clothes.

Both the groups belong to natural fiber category but differ in their source of extraction. Jute and cotton are obtained from their respective plants and wool, silk, leather are obtained from animals.

Hair traps a lot of air and provides warmth to the body.

The process of selecting parents for obtaining special characters is called selective breeding.

Pashmina shawls are woven from Kashmir goat.

Llama and alpaca of South America are the camel species that yield wool.

The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing.

Shearing → Scouring → Sorting are the steps to be followed in making fibre from fleece of sheep.

The small soft fluffy fibres of wool are called fuzz or burrs.

Silkmoth feeds on mulberry leaves.

Sericulture is the breeding and management of silk worms for the production of silk. It has been practiced in India since second era or century B.C. The silk which is produced by silk worm is of a valuable natural protein fibre. Silk worms are the larvae of silk moths. The rearing of silk worm for the production of silk is known as sericulture.

Yak wool is used in Ladakh and Tibet.

The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).