WAEC Biology 1995 Question 5

Question 5

Photosynthesis and Plant Nutrition

Carbondioxide enters the stomata during photosynthesis through the process known as

  1. A.osmosis
  2. B.active transport
  3. C.diffusion
  4. D.inhalation
  5. E.ventilation
Show the answer and explanation

Answer: C (diffusion)

Explanation

CO₂ diffuses in because its concentration inside the leaf is lower while photosynthesis uses it up.