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WAEC Biology 2020 Question 23

Question 23

Photosynthesis and Plant Nutrition

Oxygen comes out of the stomata during photosynthesis through the process known as

  1. A.diffusion.
  2. B.transpiration pull.
  3. C.osmosis.
  4. D.active transport
Show the answer and explanation

Answer: A (diffusion.)

Explanation

Oxygen is more concentrated inside the leaf than outside, so it moves out through the stomata by diffusion.