Form and movement in animals Notes

MOVEMENT IN SNAKES

•    Snakes do not have limbs (legs, arms, or wings).

•    They move by crawling on their bellies.

•    They have scales, which cover their bodies and help them to crawl.

Snakes have scales which help them crawl

•    Most snakes move in a wave-like manner.

•    Their flexible backbones help them in this movement.

MOVEMENT IN BIRDS

•    Most birds are capable of flying.

•    Birds can also walk, run, or hop on the ground.

•    Some birds such as swans and ducks can even swim in water.

•    The following features help birds to fly.

1. Birds have streamlined bodies, which makes it easier for them to move through air.

2. Their bones are hollow, which makes them lightweight.

MOVEMENT IN HUMAN BEINGS

•    Different parts of our body move even when we remain at the same place.

•    We also move from one place to another — we get up and go to our teacher or to the school compound, or go home after school.

•    We walk, run, skip, jump and move from place to place.

Human Skeleton:

•    The human skeleton provides shape and form to the human body. 

•    The average human adult skeleton has 206 bones.