Page 2 - LN3

 Many Terrestrial animals use their limbs to move.
 Some of them have four limbs.

 Two limbs in the front which are called front limb or forelimbs.
 Two limbs in the back which are called Hind limbs.
Examples:-
 Animals such as Elephant, Camels and Cows use all four Limbs to walk or run.
 Humans use their Hind limbs or to move.
 Kangaroos, the hind limbs are stronger and longer than forelimbs, which help them to hop.

b)Aerial Animals:
In birds :
 The forelimbs are modified into wings which help them to fly.
 The wings have feathers.
 They have hollow bones which keep their body light .
 They have streamlined body.
 Their wings are attached to the breastbone with the help of strong muscles which help the

birds to fly.
 Hind limbs in birds are in the form of claws, which help them to walk ,run and perch.