PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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it will die
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the stem will continue to grow straight out
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the stem bends and grows downward
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the stem bends and grows upward
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Detailed explanation-1: -A plants’ response to gravity is known as geotropism. In general, most plant shoots grow up, away from the ground (negative geotropism). If you lay a potted plant on its side, the plant shoot will eventually bend and continue to grow upward. Most plant roots grow down further into the ground (positive geotropism).
Detailed explanation-2: -When light comes from an angle, plants will curve toward it to get better access to the light they need to grow. Hormones in the plant’s tissues, called auxins, make cells on the dark side of the plant grow taller, bending the plant toward the light.
Detailed explanation-3: -In phototropism a plant bends or grows directionally in response to light. Shoots usually move towards the light; roots usually move away from it.
Detailed explanation-4: -Phototropism: The bending of growing plants towards the light is called phototropism. By orienting their leaves and stems towards light plants receive the maximum energy for photosynthesis.