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Stomatal opening or closing is due to...

Stomatal opening or closing is due to

A

change in the turgidity of guard cells

B

the inner walls of each guard cell is thick and elastic

C

cellulose microfibrils of guard cells are oriented radially

D

All of the above

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SARAS PUBLICATION-MODEL QUESTION PAPER 2-EXERCISE
  1. The chiasmata is formed during which stage of prophase - I of the meio...

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  2. Phloem sap is mainly made of

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  3. Stomatal opening or closing is due to

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  4. Best defined function of manganese (Mn) in green plants is

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  5. Anoxygenic photosynthesisis characteristic of

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  6. Match the organic compounds list under column I with the explanation g...

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  7. Kreb's cycle takes place in

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  8. Which one of the following reactions is an example of oxidative decar...

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  9. Phototropic curvature is the result of uneven distribution of

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  10. The initial step inthe digestion of milk in humans is carried out by?

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  11. If for some reason our goblet cells are non-functional this will adver...

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  12. After forceful inspiration, the amount of air that can be breathed out...

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  13. Which of the following matches correctly?

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  14. Arteries are best defined as the vessels which?

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  15. Juxtaglomerular apparatus is made up of

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  16. Stimulation of amuscle fibre by a motor neuron occurs at

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  17. Which of die following is not to the a sesamoid bone?

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  18. The purplish red pigment rhodopsin contained in the rods type of photo...

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  19. Cranial meninges do not consist of

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  20. Identify the hormone with its correct matching of source and function

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