PLANTS
THE LEAF
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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negative phototropism
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positive phototropism
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negative gravitropism
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positive gravitropism
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Detailed explanation-1: -Sunlight acts as a stimulus for the growth of organisms towards the light (positive phototropism) or away from light (negative phototropism).
Detailed explanation-2: -Positive phototropism is growth towards a light source; negative phototropism is growth away from light. Shoots, or above-ground parts of plants, generally display positive phototropism-they bend toward the light.
Detailed explanation-3: -Sunflowers are a great example of positive phototropism, because not only do their stems curve toward the light but their flowers turn to face the sunlight as well.
Detailed explanation-4: -In the plant stem, responses to light are known as a positive phototropism, which means the stem grows towards the light.