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The dominant second tropic level in a lake ecosystem is_____________________

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The dominant second tropic level in a lake ecosystem is_____________________

(a) Phytoplankton

(b) Zooplankton

(c) Plankton

(d) Benthos

The question was posed to me in an international level competition.

This interesting question is from Structure and Functions of an Ecosystem topic in portion Ecosystems of Energy Management

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The correct option is (b) Zooplankton

The explanation is: Lake ecosystem includes both biotic and abiotic components. Zooplanktons are the organisms that have animal like traits. Most of them are heterotrophy in nature. Zooplankton is a vital component of fresh water food webs.

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