If roots grow towards water but away from the direction of gravity in an experiment, what is the most suitable conclusion?
Answer and explanation
Correct answer: Hydrotropism showed a stronger effect than geotropism
The governing concept is the interaction of tropic responses. Roots commonly show positive geotropism, growing in the direction of gravity, but they also show positive hydrotropism, growing towards water. In the stated experiment, the root bends towards water even against gravity, so the water stimulus has the stronger observable influence under those conditions. Option A is therefore correct; the other choices confuse light response, deny the response or make a biologically impossible claim.
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What is the correct answer to this question?
Hydrotropism showed a stronger effect than geotropism
Why is this the correct answer?
The governing concept is the interaction of tropic responses. Roots commonly show positive geotropism, growing in the direction of gravity, but they also show positive hydrotropism, growing towards water. In the stated experiment, the root bends towards water even against gravity, so the water stimulus has the stronger observable influence under those conditions. Option A is therefore correct; the other choices confuse light response, deny the response or make a biologically impossible claim.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
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