Bio - Botany - Transport in Plants Model Question Paper

11th Standard

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Biology

Time : 02:00:00 Hrs
Total Marks : 50
    6 x 1 = 6
  1. In a fully turgid cell

    (a)

    DPD = 10 atm; OP = 5 atm; TP = 10 atm

    (b)

    DPD = 0 atm; OP = 10 atm; TP = 10 atm

    (c)

    DPD = 0 atm; OP = 5 atm; TP = 10 atm

    (d)

    DPD = 20 atm; OP = 20 atm; TP = 10 atm

  2. What type of transpiration is possible in the xerophyte Opuntia?

    (a)

    Stomatal

    (b)

    Lenticular

    (c)

    Cuticular

    (d)

    All the above

  3. Stomata of a plant open due to

    (a)

    Influx of K+

    (b)

    Efflux of K+

    (c)

    Influx of Cl-

    (d)

    Influx of OH-

  4. Munch hypothesis is based on

    (a)

    Translocation of food due to TP gradient and imbibition force

    (b)

    Translocation of food due to TP

    (c)

    Translocation of food due to imbibition force

    (d)

    None of the above

  5. Which of the following physical force is responsibl for ascent of sap?

    (a)

    Imbibition

    (b)

    Capillary force

    (c)

    Transpiration pull and cohesion

    (d)

    Root pressure

  6. According to cytochrome pump theory the anions and cations are transported by,

    (a)

    active absorption

    (b)

    passive absorption

    (c)

    active and passive absorption respectively

    (d)

    passive and active absorption respectively

  7. 10 x 2 = 20
  8. If the concentration of salt in the soil is too high and the plants may wilt even if the field is thoroughly irrigated. Explain

  9. How phosphorylase enzyme open the stomata in starch sugar interconversion theory?

  10. List out the non-photosynthetic parts of a plant that needs a supply of sucrose?

  11. Differentiate channel protein and carrier protein.

  12. What is DPD?

  13. Explain 'ascent of sap'?

  14. List out the role of anittranspirants in agriculture.

  15. Define 'Diffusion'.

  16. What is transpiration pull?

  17. Justify plant cell as an osmotic system

  18. 3 x 3 = 9
  19. Define Osmosis

  20. Show the K+ transport theory of opening of stomata with diagram.

  21. Draw a diagram to show the structure of stomata.

  22. 3 x 5 = 15
  23. What are the parameters which control water potential?

  24. Describe the transpiration pull theory.

  25. Explain the uses of Ganongs potometer.

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