Multiple choice

Which of the following organisms, in a certain pond, are secondary consumers?

  1. Ducks and carnivorous fish

  2. Aquatic crustaceans and racoons

  3. Ducks and minnows

  4. Carnivorous fish and aquatic crustaceans

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A Correct answer
Explanation

Ducks and carnivorous fish, in a certain pond, are secondary consumers. The primary consumers in a pond ecosystem are the herbivores like small fish, tadpole, etc., which feed on phytoplankton. These herbivores become the food of secondary consumers like some small fishes, crabs, frogs, etc. The secondary consumers then become the food of the tertiary consumers like large fish, turtles, etc.

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