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Indicate the correct statements: (i)Th...

Indicate the correct statements:
(i)The cell sap concentration in xylem is always high.
(ii)The cell sap concentration in xylem is not always high.
(iii)root pressure is not universal in all plants
(iv)Roots pressure is univrsal in all plants.

A

(i) and (iv)Only

B

(ii) and (iii)only

C

(i) and (iii)only

D

(ii) and (iv) only

Text Solution

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The correct Answer is:
B
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PREMIERS PUBLISHERS-TRANSPORTATION IN PLANT-OTHER IMPORTANT QUESTIONS & ANSWERS (i.Choose the correct answer)
  1. The root hairs are:

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  2. Kramer (1949) recognised two distinct mechnisms,which independently o...

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  3. Indicate the correct statements: (i)The cell sap concentration in xy...

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  4. When respiratory inhibitors like KCN Chlorodorm are applied:

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  5. Relay pump theory was put forth by ........... .

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  6. Pulsation theory was proposed by .

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  7. The term 'root pressure' was coined by:

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  8. Indicate the correct statements: (i)Roots pressure is absent in gymn...

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  9. The capillary theory was suggested by :

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  10. Cohesion and transpiration pull theory was originally proposed by:

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  11. Loss of water from mesophyll cells causes:

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  12. The water may move through the xylem at the rate as fast as:

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  13. The length and breadth of stomata is:

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  14. The opening and closing of stomata depends upon the change in pH of gu...

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  15. Who did observe that stomata open in light and close in the night:

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  16. the phosphory enzyme in guard cells supports the strach-sugar inter co...

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  17. Low pH and a shortage of water in th e guard cell activate the stress ...

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  18. Accumulation ofCO(2) in plant cell during dark:

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  19. Phenyl Mercuric Acetate(PMA),When applied as a foliar spray to plant:

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  20. The transpiration in plants is a''necessary ecil'' as stated by:

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