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Which of the following statement is corr...

Which of the following statement is correct ?

A

Members of gymnosperms show high root pressure

B

Actively transpiring plants show high root pressure

C

Root pressure is mainly responsible for ascent of sap in very tall trees

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
D
The root pressure do not account for water movement up the xylem in tall trees, actively transpiring plants and conifers.
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ARIHANT NEET-TRANSPORT IN PLANTS -Chapter exercises A. Taking it together (Assorted Questions of the Chapter for Advanced Level Practice )
  1. Which of the following conditions help in opening of stomata ?

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  2. What is the correct labelling of the following figure ?

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  3. Which of the following statement is correct ?

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  4. A man supplied excess fertiliser and watered the grass well. After som...

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  5. When beet root cylinders are washed and then placed in cold water, ant...

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  6. Potato slices are immersed in a series of solutions of different osmot...

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  7. The cell A has an osmotic potential of -20 bars and a pressure potenti...

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  8. The OP and TP of two pairs of cells A-B and X-Y are as under Cell ...

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  9. If cohesion-tension transpiration pull theory is correct, a break in w...

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  10. The process of guttation takes place

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  11. The protoplasmic streaming hypothesis for food translocation has not b...

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  12. If a cell A with DPD=5 bars is connected to cells B,C and D whose OP a...

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  13. The term Tensile strength represents that there is

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  14. Atmospheric pressure theory was rejected for the ascent of sap because

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  15. The main mechanism of determining the direction of short distance tran...

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  16. Which of the following method of transport across a membrane does not ...

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  17. A bottle filled with previously moistened Mustard seeds and water was ...

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  18. Which of the following is not true for carrier molecules involved in f...

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  19. The translocation of orgainc solutes through phloem is bidirectional b...

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  20. If a plant cell is placed in deionised water the water potential of th...

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