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NTA Abhyas NEET2020BotanyEcosystemPractice

How many of the following statement is/are correct about food chains? (1) GFC is the major conduit of energy flow in an aquatic ecosystem. (2) Source of energy in the detritus food chain is not directly the sun. (3) Detritus food chain may be connected to grazing food chain somewhere. (4) In a grazing food chain, the size of organisms always decreases at higher levels.

Options

  1. Aone
  2. Btwo
  3. Cthree
  4. Dfour

Correct answer

C. three

Step-by-step solution

Major energy flow in aquatic ecosystem occurs through GFC. In detritus food chain dead organic matter is decomposed and wasteful form of energy is reutilized. DFC and GFC are interconnected at some point in nature. In a grazing food chain, the size of organisms may or may not decrease at higher levels.

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