Q.21 Name an organism found as a secondary carnivore in an aquatic ecosystem.
Ans. In an aquatic ecosystem, the food chain can be drawn as follows.
Producer (Phytoplankton) Primary consumer (Zooplankton) Secondary consumer (small fish and water beetle) (Ist to carnivore) Tertiary consumer (lInd carnivore like large fish, water birds like fowl and duck).
So, the large fish and water birds like ducks and waterfowls which are the tertiary consumers in an aquatic ecosystem occupy a position of a secondary carnivore.
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