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WAEC Biology 2015 Question 31

Question 31

Feeding Relationships and Energy Flow

An organism at the start of a food chain which provides the total input of energy into an ecosystem is the

  1. A.sun
  2. B.producer
  3. C.consumer
  4. D.decomposer.
Show the answer and explanation

Answer: B (producer)

Explanation

Every food chain starts with a producer (a green plant), which traps the sun's energy and passes it on. The sun is the energy source but not an organism.