passwella.
Menu

WAEC Biology 2018 Question 8

Question 8

Plant Responses and Hormones

The diagrams below are illustrations of an experimental set-up to demonstrate a type of tropic response in plants. The conclusion drawn from the experiment is that

Diagram for this question
  1. A.shoots of plants are negatively thigmotropic.
  2. B.shoots of plants are negatively geotropic.
  3. C.leaves of plants are positively phototropic.
  4. D.roots of plants are positively hydrotropic.
Show the answer and explanation

Answer: D (roots of plants are positively hydrotropic.)

Explanation

The roots bend and grow towards the water source, so roots are positively hydrotropic.