Question

The name of certain animals belongs to primates and is given below.
(a) Lori.
(b) Gibbon.
(c) Monkey.
i. Which among them is closest to human beings according to the theory of evolution?
ii. Write down any two characteristics of the others.

Answer 1

i. Gibbon and humans share a common ancestor which is the anthropoid ape.

They have no tail and a semi-erect posture. The shape of their vertebral column, the ability to turn their palm-side in the upward direction and the size of the cerebral hemisphere are very similar to humans. Hence gibbon is the closest to human beings according to the theory of evolution.

ii. Characteristics of Loris:

It is nocturnal.

It feeds on small insects.

Characteristics of Monkey:

It lives colonial life.

It feeds on fruits and leaves.