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JAMB Biology 1989 Question 40

Question 40

Feeding Relationships and Energy Flow

In an ecosystem, the LEAST efficient energy transfer link is from

  1. A.producers to primary consumers
  2. B.sun to producers
  3. C.primary consumers to secondary consumers
  4. D.secondary consumers to decomposers
Show the answer and explanation

Answer: B (sun to producers)

Explanation

Green plants capture only about 1% of the sunlight falling on them, far less than the roughly 10% passed between feeding levels.