WAEC Biology 2020 Question 13

Question 13

Transport in Plants

The diagram below is an illustration of an experimental set-up. The set-up can measure comparatively the rate of

Diagram for this question
  1. A.evaporation from leaves on a single shoot under different experimental conditions.
  2. B.salt uptake by shoots from different plants.
  3. C.transpiration of a single shoot of a plant under different experimental conditions.
  4. D.water uptake by roots of different plants.
Show the answer and explanation

Answer: C (transpiration of a single shoot of a plant under different experimental conditions.)

Explanation

By timing the bubble with the same shoot in still air, wind, light or heat, one can compare how fast the shoot transpires under each condition.