How does transpiration help water move upward in plants?
Answer and explanation
Correct answer: By creating a pulling force
When water evaporates from leaf surfaces during transpiration, it creates a negative pressure or transpiration pull in the continuous water column. Cohesion between water molecules transmits this pull downward through the xylem, helping water rise from roots to leaves. Thus option A is correct; the other choices do not explain upward transport.
Frequently asked questions
What is the correct answer to this question?
By creating a pulling force
Why is this the correct answer?
When water evaporates from leaf surfaces during transpiration, it creates a negative pressure or transpiration pull in the continuous water column. Cohesion between water molecules transmits this pull downward through the xylem, helping water rise from roots to leaves. Thus option A is correct; the other choices do not explain upward transport.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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