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Water moves up against gravity and even ...

Water moves up against gravity and even for a tree of 20 m height, the tip receives water within two hours. The most important physiological phenomenon which is responsible for the upward movement of water is .....

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Absorbent force through transpiration is responsible for physiological process so water can go upward till 20 metre.
When water molecules transpire by stomata then it pushes water till leaf in xylem as a continuous column of water, upwards.
This transpiration water pressure gradient between substomatal cavity of leaf and intercellular spaces of leaf in the atmosphere.
This gradient, later gets converted into photosynthetic cells and xylem of veins of leaf. As a result transpiration absorbent force is applied.
That supplies water to height of 130m by xylem tissue.
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KUMAR PRAKASHAN-TRANSPORT IN PLANTS -Section-E NCERT Exemplar (Very Short Answer)
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  2. Absorption of water from soil by dry seeds increases the …..., thus he...

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  3. Water moves up against gravity and even for a tree of 20 m height, the...

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  4. The plant cell cytoplasm is surrounded by both cell wall and cell memb...

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  5. The C4 plants are twice as efficient as C3 plants in terms of fixing C...

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  6. Explain why xylem transport is unidirectional and phloem transport bi-...

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  7. Indentify the process occurring in I, II and III.

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  8. Given below in a table. Fill in the gaps.

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  9. Define water potential and solute potential.

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  10. Why is solute potential always negative ? Explain PsiW=PsiS+Psip.

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  11. An onion peel was taken and (a) placed in salt solution for five minut...

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  14. Give the location of casparian strip and explain its role in the water...

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  15. Differentiate between guttation and transpiration.

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  16. Explain : transpiration is an unavoidable event.

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  17. Describe briefly the three physical properties of water which helps in...

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