PLANT PHYSIOLOGY
PLANT MOVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the plant would respond negatively to gravity
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the plant would respond positively to gravity
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the plant will grow in an upward position
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the plant would exhibit negative phototropism
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Detailed explanation-1: -the plant would exhibit negative phototropism.
Detailed explanation-2: -Lighting a plant from beneath will cause the plant to grow towards the light, ergo, downwards, if it grows at all. Phototropism is the name of the process induced by lighting or sunlight from above-the plant wants to maximise the amount of light it receives, and therefore grows up towards the light.
Detailed explanation-3: -Plants respond directly to Earth’s gravitational attraction, and also to light. Stems grow upward, or away from the center of Earth, and towards light. Roots grow downward, or towards the center of Earth, and away from light. These responses to external stimuli are called tropisms.
Detailed explanation-4: -One important light response in plants is phototropism, which involves growth toward-or away from-a light source. Positive phototropism is growth towards a light source; negative phototropism is growth away from light.