PLANT PHYSIOLOGY
PLANT MOVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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positive geotropism
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negative geotropism
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Either A or B
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None of the above
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Detailed explanation-1: -If the plant part moves against the direction of gravity, it is negative geotropism. The stem of a plant moves upwards against the direction of gravity, so the stem of a plant shows negative geotropism.
Detailed explanation-2: -Plant stem grows upward opposite to the force of gravity. Hence, it exhibits negative geotropism.
Detailed explanation-3: -positively phototropic and negatively geotropic.
Detailed explanation-4: -when the stem grows against the force of gravity, this is known as a negative geotropism. when a root grows in the direction of the force of gravity, this is known as a positive geotropism.
Detailed explanation-5: -The roots grown downward in the direction of gravity, which is positive gravitropism, and the shoot grows upward away from gravity, which is negative gravitropism. The reason plants know which way to grow in response to gravity is due to amyloplasts in the plants.