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How do plants affect the water cycle in terms of preventing soil erosion?

Answer and explanation

Correct answer: Their roots bind the soil and reduce water velocity

Direct answer: B. Plant roots hold soil particles together, while stems, leaves, litter, and ground cover slow the movement of rainwater over the surface. Slower surface runoff has less power to detach and carry away soil. It also gives more water time to infiltrate into the ground, reducing the amount of erosive flow. A is wrong because vegetation does not stop rainfall; it intercepts some rain and changes how it reaches the ground. C is not the main explanation for preventing soil erosion, even though plants can release water vapor by transpiration. D is scientifically incorrect because plants do not destroy water; they temporarily store and cycle it. Memory cue: roots bind, vegetation slows, and slower runoff causes less erosion.

Related tags

PlantsSoil ErosionSurface RunoffInfiltrationHydrological CycleThe Living WorldBiologyClass 11 Mcq

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