WAEC Biology 2018 Objective — Question 7

Question 7 of 50 from the West African Examinations Council (WAEC) Biology 2018 Objective paper, with the correct answer and a full explanation.

The diagrams below are illustrations of an experimental set-up to demonstrate a type of tropic response in plants (porous pot vs dry soil). The type of response demonstrated is

A. phototropism
B. geotropism
C. hydrotropismCorrect
D. thigmotropism

Explanation

The set-up compares root growth response to water availability, demonstrating hydrotropism.

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