Movement V/s Locomotion -
- Movement is one of the significant features of living beings.
- Animals and plants exhibit a wide range of movements.
- Movement of cilia, flagella and tentacles are shown by many organisms.
- Human beings can move limbs, jaws, eyelids, tongue, etc.
- Some of the movements result in a change of place or location.
- Such voluntary movements are called locomotion.
- Walking, running, climbing, flying, and swimming are all some forms of locomotory movements.
- Locomotory structures need not be different from those affecting other types of movements.
- For example, in Paramoecium, cilia help in the movement of food through cytopharynx and in locomotion as well.
- Hydra can use its tentacles for capturing its prey and also use them for locomotion.
- We use limbs for changes in body postures and locomotion as well.
- The above observations suggest that movements and locomotion cannot be studied
- separately.
- The two may be linked by stating that all locomotions are movements but all movements are not locomotions.
- Methods of locomotion performed by animals vary with their habitats and the demand of the situation.
- However, locomotion is generally for the search of food, shelter, mate, suitable breeding grounds, favourable climatic conditions or to escape from enemies/predators.
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Walking, running, climbing, flying, and swimming are all some forms of locomotory movements. Plants do show movements but locomotion is absent in them. Hence the correct option is c. plants
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