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Which of the following is the most likel...

Which of the following is the most likely cause for wider opening of stomata?

A

The atmosphere outside the stomata is becoming less humid

B

Secretions of salt molecules by the adjacent guard cells is taking place

C

Water molecules enter guard cells

D

The night temperature is going to fall

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CHETANA PUBLICATION-PLANT WATER RELATION-Exercise
  1. Wilting appears due to excessive............

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  2. Stomata in angiosperms open and close due to ........

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  3. Which of the following is the most likely cause for wider opening of s...

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  4. Transpiration pull will be maximum under which of the following condit...

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  5. In which of the following situation, the stomata transpiration exhibit...

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  6. In hypertonic solution, the water potential of a cell...........

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  7. A cell is plasmolyzed after being kept in a hypertonic solution. What ...

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  8. Water is absorbed when outside solution is ...........

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  9. Osmosis involves ........

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  10. Which of the following is against concentration gradient?

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  11. The pressure exerted by cell wall to balance the turgor pressure is ca...

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  12. If cells completely lack turgor pressure, they are said to be ...........

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  13. Larger molecules (bulk flow?) are taken into cell by ...............

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  14. Root hair will absorb water when external solution is........

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  15. Absorption of water involving the activity of root is called.............

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  16. Uptake of water at the expenses of metabolic energy is known as..........

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  17. Which of the following is the major source of water for land plants?

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  18. Maximum transpiration occurs through ......

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  19. Water in plants rises through.........

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  20. Guard cells are associated with......

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