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.
Frequently asked questions
What is the correct answer to this question?
Transpiration
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Life Processes. Topic: Transportation.
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