Bio - Botany - Plant Growth and Development Model Question Paper

11th Standard

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Biology

Time : 01:30:00 Hrs
Total Marks : 40
    5 x 1 = 5
  1. If the diameter of the pulley is 6 inches, length of the pointer is 10 inches and distance travelled by pointer is 5 inches. Calculate the actual growth in length of plant.

    (a)

    3 inches

    (b)

    6 inches

    (c)

    12 inches

    (d)

    30 inches

  2. Seed dormancy allows the plants to

    (a)

    overcome unfavourable climatic conditions

    (b)

    develop healthy seeds

    (c)

    reduce viability

    (d)

    prevent deterioration of seeds

  3. Which hormone is maximum in coconut milk?

    (a)

    Gibberellins

    (b)

    Ethylene

    (c)

    Cytokinin

    (d)

    Auxin

  4. Testing of any chemical substance by using living system is called

    (a)

    Grafting

    (b)

    Cloning

    (c)

    Biopsy

    (d)

    Bioassay

  5. Kurosawa found plants suffering from Bakanae disease. This led to discovery of ................

    (a)

    GA

    (b)

    Cytokinin

    (c)

    ethylene

    (d)

    2,4, D

  6. 5 x 2 = 10
  7. What are the parameters used to measure growth of plants?

  8. Define Growth.

  9. Name any two synthetic auxins?

  10. What is bolting?

  11. What is a florigen?

  12. 5 x 3 = 15
  13. What is plasticity?

  14. Name the plant growth regulators?

  15. What are climacteric fruits?

  16. List the practical applications of vernalization.

  17. Draw a growth curve.

  18. 2 x 5 = 10
  19. Write the physiological effects of Cytokinins.

  20. Give a brief account on Programmed Cell Death (PCD)

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