The silkworm is (i) a caterpillar, (ii) a larva.

1

(a)

(i)

(b)

(ii)

(c)

Both (i) and (ii)

(d)

Neither (i) nor (ii)

Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following would be the right gift for her to buy?

1

(a)

Woollen shawl

(b)

Silk scarf

(c)

Animal fur cap

(d)

Leather jacket

Silkworms secrete fibre made of

1

(a)

fat

(b)

cellulose

(c)

protein

(d)

nylon

Lohi and nali are breeds of ______

1

(a)

sheep

Wool dissolves in ____ and _______

1

(a)

acids and bases

The sleeping period of silkworm is _____ hours at intervals of about six days.

1

(a)

24

_______ is the largest producer of silk.

1

(a)

China

The angora rabbit yields best variety of wool

1

(a) False

(b) True

Silk is a natural carbohydrate fibre.

1

(a) True

(b) False

Mooga is the strongest variety of wool.

1

(a) True

(b) False

Write the name of the animal from which wool for pashmina shawls is obtained.

2

(a)

In which part, the wool yielding animals llama and alpaca are found?

2

(a)

Out of scouring or shearing, which process comes first in the production of wool from sheep?

2

(a)

Given below is a sequence of steps in the processing of wool. Which are the missing step? Add them.
Shearing, .... sorting ......, ......,......

3

(a)

Sheep are herbivores, so which type of feed (or food) is provided by shepherds?

3

(a)

Write a short note on how first silk industry began in China.

3

(a)

Ajay's father works in a wool industry. In his line of work, he does the job of sorting the fleece of sheep into fibres of different qualities. Ajay noticed that his father and other workers who were doing the similar kind of jobs faced a number of health problems. Ajay discussed this problem with his friends and he came to know that his father is getting health problems due to the nature of his work. Ajay is worried about his father's health. He advised his father to take care of their health and told him about the occupational hazards.
Now answer the following questions.
(a) What do you mean by occupational hazard?
(b) Name the disease that workers may at risk.
(c) What values are shown by Ajay?

5

(a)