Growth of roots in the direction of gravity is an example of what?
Answer and explanation
Correct answer: Positive geotropism
Geotropism, also called gravitropism, is directional growth in response to gravity. Roots generally grow downward, in the same direction as gravitational pull, so their response is called positive geotropism. Hence option A is correct. Phototropism concerns light, hydrotropism concerns water, and thigmotropism concerns touch; none of these explains the stated stimulus.
Frequently asked questions
What is the correct answer to this question?
Positive geotropism
Why is this the correct answer?
Geotropism, also called gravitropism, is directional growth in response to gravity. Roots generally grow downward, in the same direction as gravitational pull, so their response is called positive geotropism. Hence option A is correct. Phototropism concerns light, hydrotropism concerns water, and thigmotropism concerns touch; none of these explains the stated stimulus.
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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