Question

Describe the body structure of a snake and its movement.

Answer 1

Body structure : 2 Marks
Movement : 1 Mark

• Snakes are vertebrates with a vertebral column. Its 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.