Planktons are those unicellular or multicellutar organisms which

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12.Ecosystem

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Planktons are those unicellular or multicellutar organisms which

A

Passively float at or near the surface of water

B

Remain held by surface tension force

C

Are attached at the bottom

D

Actively swim on the surface

Solution

(a)Because at the surface of water, light is available easily.

Standard 12

Biology

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