Roots of a plant show______________?
Correct answer: B. Negative phototropism and positive geotropism
- A. Positive phototropism and negative geotropism
- B. Negative phototropism and positive geotropism
- C. Negative tactic movement and positive tropic movement
- D. Positive geotropism of stem and roots
Explanation
Roots grow away from light, showing negative phototropism, and grow in the direction of gravity, showing positive geotropism. Students may choose a by reversing both responses, but roots generally seek darkness and grow downward while shoots show the opposite pattern.
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