Movement


MOVEMENT


•           Different types of animals have different organs for movement.

•           Land animals have four limbs.

•           Lizards and crocodile move by crawling, but they do have limbs.

•           Snakes do not have legs. They crawl.

Figure 14: Snake crawl

 

•           Some use all four limbs to walk, run or jump while some use only hind limbs, e.g. kangaroo.

Figure 15: Kangaroo use hind limbs for movement

 

•           Birds have wings, which help them in flying.

•           The fore limbs of birds are modified into wings, which have feathers.

Figure 16: Birds fore limbs are modified into wings

 

•           Frogs swim with webbed toes, when on land they use hind legs to jump.

•           Fishes swim with the help of fins.

Figure 17: Frogs have webbed toes and fishes have fins as an organ for movement

 

•           Tortoise use four paddle-like limbs to push water.

•           Penguins use two fore limbs as flippers to push water forwards.

Figure 18: Tortoise have four paddle-like limbs and penguins use two fore limbs as flippers for movement

 

•           Some insects like butterfly have one or two pairs of wings for flying.

•           The wings are different from those of birds, as they have no feathers.

•           They are made of tiny coloured scales.