Question

Decribe the body structure and movement in snake.

Answer 1

Body structure : 2 Marks
Movement : 1 Mark

Snakes are vertebrates with vertebral column. Body is supported by a skeleton made up of vertebrae which run continuously from head to tail. As they do not have any limbs, snakes do not have appendicular skeleton. They have a long back bone and many interconnected muscles that help them to slither. They have muscles connecting the backbone, ribs and skin.
Snakes move in grass, sand and water. Though the snakes do not have arms or legs, they can climb trees. They move in a loop-like, zig-zag manner. They cannot move in a straight line. They have difficulty in moving on very smooth surfaces.