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Question

When a big fish eats a small fish which eats water fleas supported by phytoplankton, water fleas are

  1. Producers
  2. Primary consumers
  3. Secondary consumers
  4. Top consumers

A
Producers
B
Secondary consumers
C
Top consumers
D
Primary consumers
Solution
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In an ecological pyramid, the plants are producers. They are the first trophic level of a pyramid. The primary consumers eats producers. They are the second trophic level of a pyramid. The secondary consumers eat primary consumers. They are the third trophic level of a pyramid. In a water ecosystem, a big fish eats a small fish which eats water fleas supported by phytoplankton. In this, phytoplanktons are producers, water fleas are primary consumers, small fish are secondary consumers and big fish are top consumers.
Thus, the correct answer is 'Primary consumers.'

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