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Conversion of starch to organic acid is ...

Conversion of starch to organic acid is essential for

A

stomatal closure

B

stomatal opening

C

stomatal initiation

D

stomatal growth

Text Solution

Verified by Experts

The correct Answer is:
B
The starch hydrolyse into glucose 1-phosphate so that, osmotic potential becomes lower in guard cells. As a result of this water enters into the guard cell by osmotic diffusion from surrounding epidermal and mesophyll cells. Guard cells become turgid and stomata will open. The starch-sugar interconversion theory about the mechanis of stomatal movement was given by Syyere (1923) and modified by Steward (1964).
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-TRANSPORT IN PLANTS -Exercise
  1. If turgidity of a cell surrounded by water increases, the wall pressur...

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  2. Osmotic pressure in the leaf cells is

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  3. Water entering root due to diffusion is part of

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  4. The movement of water from one cell of the cortex to the adjacent one ...

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  5. Which of the following is used to determine the rate of transpiration ...

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  6. Some of the growth regulators affect stomatal opening. Closure of stom...

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  7. Which of the following is an effective adaptation for better gas excha...

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  8. The direction and rate of water movement from cell to cell is based on

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  9. Conversion of starch to organic acid is essential for

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  10. In guard cells when sugar is converted into starch, the stomatal pore

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  11. Meaningful girdling (Ringing) experiments cannot be done on sugarcane ...

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  12. Guttation is caused by

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  13. Water potential can be optained by

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  14. An innovative professor who wanted to gibe a live demonstratin of phys...

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  15. Mainly conductio of water in an angiosperm occurs through

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  16. Root system in a plant is well developed

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  17. In the terrestrial habitat which of the following factors affect tempe...

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  18. Basis of stomatal opening is A plant cell attains turgidity due to ...

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  19. Stomata in angiosperms open and close due to

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  20. The spraying of phenyl mercuric acetate in leaves

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