Selective breeding is a process of ________________ .

What are the properties of fibre ?

People living in cold countries prefer __________________ clothes to keep them warm.

In ancient Egypt, __________________ plants were cultivated near the River Nile

Sheep are ______________________ .

____________________ is a mixed fibre which is a blended fabric made of polyester and wool.

Which of the following are correct ?

(a) Fibers made by blending natural fibers with synthetic fibers to obtain more superior and useful fibers are called mixed fibers .

(b) Example (Terylene + cotton ).

Which of the following are correct ?

(a) We use many materials in our daily life. Some are made up of natural materials such as wood, cotton, stones and clay.

(b) A material can be used to make different kinds of things. For example: glass can be used to make bowls, tumblers, window panes etc.

Which of the following are correct ?

(a) Terry wool is a blend of polyester and wool.

(b) Terry wool has been used for blankets, horse rugs,saddle clothes, carpeting insulation and upholstery.

Which of the following are correct ?

(a) The breeding of sheep is done to obtain such breeds of sheep which yield good quality of wool in large quantities.

(b) The sheep which have a thick coat of hair on their body and are called sheep of ‘good breeds.’

(c) The breeding of sheep raises the quality and quantity of silk produced.