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What does the phenomenon of throughfall mean in the hydrological cycle?

Answer and explanation

Correct answer: Rainwater passing through the vegetation canopy and falling directly to the ground

Correct answer: B, throughfall. A forest canopy changes how rainfall reaches the ground. Some rain falls through gaps between leaves and branches, while some droplets strike leaves or branches and then drip from them. Water that reaches the forest floor through these canopy pathways is called throughfall. The important point is that it passes through or drips from the vegetation canopy rather than travelling down the main trunk. A is wrong because evaporation is the conversion of liquid water into vapour and does not describe rain reaching the soil. C is wrong because groundwater rise is a subsurface movement, not a canopy process. D is wrong because melting river ice is unrelated to the definition. Stemflow is the contrasting term for water that runs down stems or trunks. Memory cue: throughfall means rainfall gets “through” the forest canopy to the floor.

Related tags

ThroughfallForest CanopyWater CycleStemflowHydrological CycleThe Living WorldBiologyClass 11 Mcq

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