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What is the relation between water transport by xylem and transpiration through stomata in plants?

Answer and explanation

Correct answer: Loss of water vapour through stomata creates upward pull in xylem

Transpiration is the loss of water vapour from leaf surfaces, mainly through stomata. This loss lowers water potential in leaf tissues and produces tension, commonly called transpiration pull, in the continuous water column. Cohesion between water molecules helps transmit the pull downward and draws water upward through xylem. Therefore option A is correct; the other options misuse plant structures or deny the relationship.

Related tags

XylemStomataTranspiration PullTransportationLife ProcessesScienceClass 10 Mcq

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