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Ecosystems — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEcosystems1 Mark
MCQ
The second trophic level in a lake is-
  • A
    Phytoplankton.
  • B
    Zooplankton.
  • C
    Benthos.
  • D
    Fishes.
✓

Answer

  1. Zooplankton.

Explanation:

Zooplankton are primary consumers in aquatic food chains that feed upon phytoplankton.

Therefore, they are present at the second trophic level in a lake.

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