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Define transpiration pull....

Define transpiration pull.

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Cohension transpiration pull theory operates in

Cohesion transpiration pull theory operates in

Describe transpiration pull model of water transport in plants. What are the factors influencing Transpiration? How is it useful to plants?

Carrier proteins for active salt uptake 1. have pores 2. form complex with ions 3. function under transpiration pull 4. All of the above

If cohesion-tension transpiration pull theory is correct, a break in water column should (a) Increase water content of leaves (b) Increase rate of photosynthesis (c) Cause wilting of leaves (d) Have no effect at all

Cohesion/transpiration pull theory of ascent of sap was proposed by

Value of water tension/transpiration pull developed in plants is

The ascent of minerals is 1. equal to the rate of translocation of water 2. dependent on transpiration pull 3. through xylem vessel 4. All of the above

[A]: The water molecules are held together from cells of leaf to root because of cohesive force. [R]: Water does not ascend in the tissue due to transpiration pull.

UNITED BOOK HOUSE-QUESTION PAPER 2014 (1)-EXAMPLE
  1. Mention the significance of glyoxysome.

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  2. Define photorespiration

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  3. Define transpiration pull.

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  4. Mention the role of Gastrian and Secretin in digestion.

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  5. Define cadiac cycle.

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  6. Write the differences between Osteichthyes and Chondrichthyes. Name an...

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  7. Mention one characteriitc of the BIOlum to which silver fish belongs.

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  8. State two characteristic features of pteridophytes. Give one example.

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  9. Name the mouth- parts of cockroach. What is the function of 'Mushroom ...

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  10. Write two differences between Androecium and Gynoccium. What is margin...

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  11. What do you mean by simple and multiple fruits? Give one example of ag...

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  12. Explain the 'Induced fit model' of enzyme action.

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  13. Mention one characteristic of each of Leptotene, Zygotene and Pachyten...

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  14. Differentiate between Mnetaphse-I and Metapase-II. State the role of m...

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  15. Mention one importance of each of Auxin, gibberellin and Abscisic acid...

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  16. What do you mean by 'RQ' of nutrients? In which part of the cell elect...

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  17. What is fermentation? Mention two applications of fermentation process...

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  18. Explain with schematic diagram, the process of 'chloride shift' regard...

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  19. Mention one important function of each of Glomerulus, Pineal gland and...

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  20. State the differences between rod cells and cone cells. What is the fu...

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