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Which of the following conditions help i...

Which of the following conditions help in opening of stomata ?

A

Darkness, pH-2, high `CO_(2)` conenctration

B

pH-7, low `CO_(2)` concentration and light

C

pH-5, low `CO_(2)` concentration and dark

D

High `CO_(2)` concentration, low `K^(+)` ion concentration in guard cells

Text Solution

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The correct Answer is:
B
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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. A tree girdled up to xylem may survive for sometime, but ultimately di...

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  2. Root pressure does not take an active part in the ascent of sap becaus...

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  3. Which of the following conditions help in opening of stomata ?

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

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  5. Which of the following statement is correct ?

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

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

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

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

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

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

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  12. The process of guttation takes place

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

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

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  15. The term Tensile strength represents that there is

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

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

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

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

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

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