BOTANY
PLANT ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Monarch butterflies migrate from Canada to Mexico each year.
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A hippopotamus submerges itself in water until the Sun goes down.
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A wilted flower returns to an upright position after being watered.
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A potted plant falls on its side, but it roots still grow downward.
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Detailed explanation-1: -For instance, the roots of the plants grow towards the gravitational field whereas the stem grows away from the gravitational field. The downward growth of roots is an example of a positive gravitropism whereas the upward growth of roots is an example of negative gravitropism.
Detailed explanation-2: -Likewise, if you plant a seed upside down, the roots will still grow downward, while the shoot will still grow upward. Plants that grow on steep hillsides are great examples of geotropism. They might start out growing horizontally, but they’ll eventually begin to grow away from gravity and toward the sunlight.
Detailed explanation-3: -Gravitropism is an important plant growth response to the environment that directs shoots upward and roots downward, thereby allowing each organ to reach environments that are adequate for performance of their primary functions.
Detailed explanation-4: -If a plant in a pot is laid on its side, the growth of the main stem will start to curve into an upright position, away from the gravitational pull, and the roots will curve down towards gravitational pull.