SCIENCE
PLANT KINGDOM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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gravitropism
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phototropism
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thigmotropism
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None of the above
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Detailed explanation-1: -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-2: -Roots normally grow downwards towards the stimulus, shoots upwards away from the stimulus, while leaves and special kinds of stems like underground rhizomes or aerial runners have adaptations to grow horizontally, approximately at right angles to the gravitational field.
Detailed explanation-3: -Well, It is a phenomenon that is called “Gravitropism". Gravitropism is either positive which means “with gravity” or negative gravitropism which means against gravity. It is said that plant and fungi both have negative gravitropism i.e. both of them grow upwards.
Detailed explanation-4: -Gravitropisms. Phototropism is a response to the stimulus of light, whereas gravitropism (also called geotropism) is a response to the stimulus of gravity . When the stem grows against the force of gravity (upwards), this is known as a negative gravitropism.
Detailed explanation-5: -Gravitropism (also known as geotropism) is a coordinated process of differential growth by a plant in response to gravity pulling on it. It also occurs in fungi. Gravity can be either “artificial gravity” or natural gravity. It is a general feature of all higher and many lower plants as well as other organisms.