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Assertion . Movemant of materials inside...

Assertion . Movemant of materials inside phloem is bidirectional, both upwards and downwards Reason. Movement of molecules inside xylem is unidirectional always upwards

A

If both are ture with reason being correct explanation (A).

B

If both are ture with reason being correct explanation (A).

C

assertion is ture but reason is wrong (C)

D

And both are wrong (D)

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The correct Answer is:
B
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DINESH PUBLICATION-TRANSPORT IN PLANTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS
  1. Stomatal opening is influenced by

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  2. Given below are assertion and reason .Assertion . Water entering a pla...

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  3. Assertion . Movemant of materials inside phloem is bidirectional, both...

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  4. The relationship piv=nRT is not obeyed by

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  5. phloem sap is mainly made of

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  6. Force generated by transpiration can create pressure sufficient to lif...

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  7. Guttation differs from transpiration in

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  8. The ability to rise in thin tubes and Ability to resist a pulling forc...

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  9. Which of the following is not a purpose of transpiration

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  10. An osmometer is filled with 0.5 M solution of NaCl in water. In which ...

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  11. Stomata open by

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  12. Correct pathway of water movement in plant roots is

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  13. Which growth hormone is asscoiated with stomatal movemants

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  14. For a plasmolysed cell, which equation is correct ?

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  15. Identify the wrong statement

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  16. Number of stomata is 30 and epidermal cells 120 per unit area of a le...

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  17. Match the lists and find the correct option {:(,I,,II),(a., "Henry Dix...

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  18. In stomatal opening, influx of K^(+) is accompanied by effux of

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  19. Most accepted theory for ascent of sap is Sap ascends in woody stems...

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  20. Which of the following criteria does not pertain to facillatated trans...

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