PLANT PHYSIOLOGY
PLANT MOVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Photo tropism application of light
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Geotropism Gravity
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Hydrotropism is the application of water
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Thigmotropism is a tactile application
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Chemo tropism is a chemical application
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Detailed explanation-1: -The correct answer is: geotropism. The response or the movement of the plant parts towards the force of gravity is called geotropism. The downward growth of roots towards the pull of gravity is called positive geotropism.
Detailed explanation-2: -Roots grow downward, or towards the center of Earth, and away from light. These responses to external stimuli are called tropisms. Plants’ growth response to gravity is known as gravitropism; the growth response to light is phototropism. Both tropisms are controlled by plant growth hormones.
Detailed explanation-3: -The movement of plant parts in response to the direction of gravity is known as geotropism. The growth of plant roots is an example of geotropism as it grows towards the direction of gravity.
Detailed explanation-4: -Explanation : Roots – Roots grow down because the root respond to gravity by releasing the chemicals that prevent growth on the lower side, thus turning the root downwards.