Farmers practise crop rotation because it

A. helps to prevent soil erosion

B. allows two crops to be planted at the same time

C. helps to conserve soil fertility

D. is an alternate to shifting cultivation

Which of the labelled parts is used for feeling?

A. 1

B. 2

C. 3

D. 4

The structure labelled 2 is the

A. compound eye

B. ocellus

C. antenna

D. labial palp

Which of the structure is the molar?

A. 1

B. 2

C. 3

D. 4

What is the function of 3?

A. cutting of large piece of food

B. seizure and tearing of prey

C. Grinding of food

D. Tearing of flesh only

The type of joint at the point labeled 5 is the?

A. pivot joint

B. gliding joint

C. ball and socket joint

D. hinge joint

Which of the labeled bone is the ulna?

A. 1

B. 3

C. 4

D. 5

What is the name of the structure labelled 2?

A. Odontoid process

B. Olecranon process

C. Patella

D. Condyle

In which of the habitats will plants show xeromorphic features most prominently?

A. X

B. R

C. P

D. Q

Which ecological factor exerts the greatest influence on the structure of the profiles?

A. Topographic

B. Edaphic

C. Biotic

D. Climatic