How is upward movement of water in xylem possible against gravity?
Answer and explanation
Correct answer: By transpiration pull and root pressure
Water enters roots from the soil and moves into the xylem. Evaporation of water from leaf stomata creates transpiration pull, which is transmitted through the continuous water column and is a major force lifting water upward. Root pressure can also push water from below, especially when transpiration is low. Thus option A is the best answer; the other choices involve processes that do not occur in xylem transport.
Frequently asked questions
What is the correct answer to this question?
By transpiration pull and root pressure
Why is this the correct answer?
Water enters roots from the soil and moves into the xylem. Evaporation of water from leaf stomata creates transpiration pull, which is transmitted through the continuous water column and is a major force lifting water upward. Root pressure can also push water from below, especially when transpiration is low. Thus option A is the best answer; the other choices involve processes that do not occur in xylem transport.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
