Biology 0610 · IGCSE · Transpiration

Transpiration — practice question

Petroleum jelly does not allow water to pass through it and is transparent. If the lower surface of a plant’s leaves is coated with a thin layer of petroleum jelly, the rate at which water is lost from the plant will decrease. Which statement explains this?

  • APlants absorb nutrients from the petroleum jelly.
  • BPlants absorb water from the petroleum jelly.
  • CStomata are blocked by the petroleum jelly.
  • DThe petroleum jelly stops photosynthesis.

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