Describe the body movement in the following organisms:
Fish, Snail and snake
Solution:
Snakes :
Snakes have a backbone and many interconnected muscles that help them to slither. They have muscles connecting the backbone, ribs and skin. Snakes move in a loop-like, zig-zag manner. They cannot move in a straight line, and have difficulty in moving on very smooth surfaces.
Snail:
Snail moves with the help of a single muscular foot. The under surface of the foot is lubricated with mucus which helps the snail to move easily. The rhythmic contractions and relaxations of the foot brings about a moving action in the body. The entire body except the foot lies inside the shell.
Fish:
Fish possess a streamlined body which helps them to swim in water. They swim with the help of their fins and their tails. The tail flaps from side to side to propel in the right direction. Some fish, however, move by bending their bodies from one side to another in quick succession. This produces a thrust that helps it move forward.
Snakes :
Snakes have a backbone and many interconnected muscles that help them to slither. They have muscles connecting the backbone, ribs and skin. Snakes move in a loop-like, zig-zag manner. They cannot move in a straight line, and have difficulty in moving on very smooth surfaces.
Snail:
Snail moves with the help of a single muscular foot. The under surface of the foot is lubricated with mucus which helps the snail to move easily. The rhythmic contractions and relaxations of the foot brings about a moving action in the body. The entire body except the foot lies inside the shell.
Fish:
Fish possess a streamlined body which helps them to swim in water. They swim with the help of their fins and their tails. The tail flaps from side to side to propel in the right direction. Some fish, however, move by bending their bodies from one side to another in quick succession. This produces a thrust that helps it move forward.