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Upward movement of water in xylem is helped by which process?

Answer and explanation

Correct answer: Transpiration

Transpiration is the loss of water vapour from the aerial parts of a plant, mainly through stomata. As water evaporates from leaf surfaces, it creates tension or a transpiration pull in the continuous water column of the xylem. Cohesion between water molecules helps transmit this pull downward, drawing more water upward from the roots. Thus option A is correct; the remaining processes belong to animal physiology or digestion.

Related tags

XylemTranspiration PullWater TransportTransportationLife ProcessesScienceClass 10 Mcq

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