Which type of movement would have been possible if

(a) our elbow had a fixed joint?

(b) we were to have a ball and socket joint between our neck and head.

Boojho fell off a tree and hurt his ankle. On examination the doctor confirmed that the ankle was fractured. How was it detected?

Bones are hard structures and cannot be bent. But, we can still bend our elbow, knee, etc. How is this possible?

Earthworms are known as ‘farmer’s friends’. Why?

(a) Unscramble the jumbled words and write them in the blank spaces provided.

(i) neosb ……………….

(ii) themevom ………………..

(iii) iontcaronct …………………

(iv) lsecsum …………………

(v) arctigeal …………………….

(vi) epahs …………………….

(vii) sangro inerlan …………………….

(viii) laxaaeriont ……………………