Bio - Botany - Photosynthesis Model Question Paper

11th Standard

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Biology

Time : 02:00:00 Hrs
Total Marks : 50
    6 x 1 = 6
  1. Which chlorophyll molecule does not have a phytol tail?

    (a)

    Chl- a

    (b)

    Chl-b

    (c)

    Chl- c

    (d)

    Chl -d

  2. For every CO2 molecule entering the C3 cycle, the number of ATP & NADPH required

    (a)

    2ATP + 2NADPH

    (b)

    2ATP + 3NADPH

    (c)

    3ATP + 2NADPH

    (d)

    3ATP + 3NADPH

  3. A plant growing in a tree as epiphyte accumulates malic acid in dark and cells contains large storage vacuoles. Identify the of type of pathway that takes place in this plant.

    (a)

    C4pathway

    (b)

    Glycolate Metabolic pathway

    (c)

    Di carboxylic acid pathway

    (d)

    CAM pathway

  4. Energy needed for ATP synthesis in PS II comes from____________.

    (a)

    Proton gradient

    (b)

    Electron gradient

    (c)

    Reduction of glucose

    (d)

    Oxidation of glucose

  5. Kranz anatomy is one ofthe characteristics of the leaves of

    (a)

    Sugarcane

    (b)

    Wheat

    (c)

    Potato

    (d)

    Mustard

  6. Identify incorrect pair regarding C4 cycle.

    (a)

    Initial carboxylation - mesophyll cells

    (b)

    Primary CO2 acceptor - PEP

    (c)

    First product - OAA

    (d)

    Bundle sheath cells - with granum

  7. 7 x 2 = 14
  8. Two groups (A & B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to the light of wavelength 400-450nm & Group B to the light of the wavelength of 500- 550nm. Compare the photosynthetic rate of the 2 groups giving reasons.

  9. A tree is believed to be releasing oxygen during night time. Do you believe the truthfulness of this statement? Justify your answer by giving reasons?

  10. What are Quantasomes?

  11. Name the types of phycobilins with example.

  12. Distinguish fluorescence and phosphorescence.

  13. What is DCMI?

  14. What is PAR?

  15. 5 x 3 = 15
  16. Grasses have an adaptive mechanism to compensate photorespiratory losses- Name and describe the mechanism.

  17. Differentiate PSI and PSII?

  18. What are Carotenoids?

  19. List out Conclusions of Hill's Reaction

  20. What is the significance of C4 cycle?

  21. 3 x 5 = 15
  22. In Botany class, the teacher explains, Synthesis of one glucose requires 30 ATPs in C4 plants and only 18 ATPs in C3plants. The same teacher explains C4 plants are more advantageous than C3 plants. Can you identify the reason for this contradiction?

  23. Differentiate Cyclic and Non-Cyclic photophosphorylation.

  24. Explain Non cyclic photophosphorylation?

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