What are phytoplankton and zooplankton?

Answer 1

Planktons are microscopic organisms which are floating passively on suface of open water ecosystems. These are present in both fresh water and marine habitats, drifting with current.

Planktons are diverse in nature, broadly divided in zooplankton and phytoplankton . Autotrophic components are phytoplanktons and heterotrophic components are zooplanktons, but detrivorous planktonic organisms are also present. Larvae of non-planktonic organisms could also initially live as planktons.

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Though planktons are microscopic in size but they play very important role in aquatic food chains. Phytoplanktons are only producers in open oceans. Planktons are short lived but their rate of reproduction is very high.

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Answer 2

Logan Allen

Zooplankton are small animals that feed on other zooplankton and phytoplankton, which are microscopic organisms that photosynthesize and form the base of the marine food chain.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.