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In which situation will positive geotropism be seen?

Answer and explanation

Correct answer: Root growing downward

The governing concept is geotropism, also called gravitropism. Positive tropism means growth in the direction of the stimulus. Gravity acts downward, and roots usually grow downward in response to it; therefore downward root growth is positive geotropism. Upward stem growth is generally negative geotropism, tendril coiling is related to touch, and pollen-tube growth toward an ovule is chemotropism. Hence option B is correct.

Related tags

Control CoordinationGeotropismGravitropismRoot GrowthControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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