Concise Selina Solutions for Class 9 Biology Chapter 12 Skeleton: Movement and Locomotion


Movement is when the living organism moves a body part or parts to bring without a change in the position of the organisms. Locomotion is, when the movement of a part of the body leads to change in the position and location of the organism. Both of these are brought about by the joint efforts of the skeletal and muscular systems. Movement is seen in both vertebrates and invertebrates. Movement is an essential feature of all living beings. Movement refers to the change in the direction, shape, etc., of body parts. Locomotion is the change in body position from one place to another. Animals exhibit both and movement and locomotion while plants exhibit the only movement.

In a human body, the skeletal system shapes the body, while the muscular system supports the movement. In this topic, you will learn about the role of bones in locomotion and movement.

Locomotion: Locomotion is the movement of an organism from one place to another, aided by the action of appendages like flagella, limbs, or wings.

Movement: Movement is the change in position of any part of the body of an organism. It includes breathing, chewing, beating of the heart etc. in animals and tropical movements and nastic movements in plants.