How are locomotion and movement expressed by living organisms? Explain with examples.

(N/A) Movement is a significant characteristic of living organisms.
Animals and plants exhibit many types of movements.
In $Amoeba$,the streaming of protoplasm is a simple form of movement.
- Many other organisms show movement using cilia,flagella,and tentacles.
- Human beings show movement of eyelids,tongue,limbs,and jaws.
- Some types of movements result in a change of place or location. Such voluntary movements are called locomotion.
Walking,running,climbing,flying,and swimming are forms of locomotory movements.
Locomotory structures need not be different from those affecting other types of movements.
In $Paramecium$,cilia help in the movement of food through the cytopharynx and in locomotion as well.
$Hydra$ can use its tentacles for capturing prey and for locomotion.
Human beings use limbs for changes in body posture and for locomotion.
All these observations suggest that movements and locomotion cannot be studied separately.
- We can say that all locomotions are movements,but all movements are not locomotions.
Plants also exhibit movements like phototaxis or geotaxis.
In animals,methods of locomotion vary with their habitats and the demands of the situation.
- Generally,locomotion is performed for the search of food,shelter,mating,breeding grounds,favorable climatic conditions,or escaping from enemies/predators.