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Which of the following is referred to as producer in marine ecosystem ?

  • A.Small fish
  • B.Fungi
  • C.Zooplanktons
  • D.Phytoplankton

Answer: D

The producer in the marine ecosystem is phytoplankton, the microscopic floating plants that make food by photosynthesis and form the base of the marine food chain. Small fish and zooplankton are consumers and fungi are decomposers, so they are not producers. The answer is Phytoplankton. Producers are organisms that make organic matter from sunlight, so on the open sea the tiny floating phytoplankton, not the fish, are the first link of the food chain.

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