Question

what is the main difference between locomotion and movement?

Answer 1

Movement is the temporary or permanent displacement of a body or its parts from its original position. Living beings and parts thereof move in response to stimulus from outside or from within the body. Locomotion, on the other hand, is the displacement of the entire body from one place to another.

Answer 2

Whenever a biological organism does not change it's 'geographical location' but moves it's limbs/parts (reacting to a stimulus in case of plants) is called MOVEMENT

But if it changes it's geographical location then it is said to be locomoting

Hence plants can do just movement but cannot locomote