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Botany - Asexual and Sexual Reproduction in Plants Practice Question Paper

12th Standard EM

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Biology

Time : 01:00:00 Hrs
Total Marks : 50
    8 x 1 = 8
  1. Size of pollen grain in Myosotis

    (a)

    10 micrometer

    (b)

    20 micrometer

    (c)

    200 micrometer

    (d)

    2000 micrometer

  2. Arrange the layers of anther wall from locus to periphery

    (a)

    Epidermis,middle layers, tapetum, endothecium

    (b)

    Tapetum, middle layers, epidermis, endothecium

    (c)

    Endothecium, epidermis, middle layers, tapetum

    (d)

    Tapetum, middle layers endothecium epidermis

  3. Assertion : Sporopollenin preserves pollen in fossil deposits
    Reason : Sporopollenin is resistant to physical and biological decomposition

    (a)

    assertion is true; reason is false

    (b)

    assertion is false; reason is true

    (c)

    Both Assertion and reason are not true

    (d)

    Both Assertion and reason are true.

  4. Which of the following aquatic plant is popularly known as the "Terror of Bengal"?

    (a)

    Eichomia crassipes

    (b)

    Vallisneria spiralis

    (c)

    Pistia stratiotes

    (d)

    Zostera marina

  5. Which is not a part of mature seed?

    (a)

    Funiculus

    (b)

    Testa and tegma

    (c)

    hilum

    (d)

    Chalaza

  6. Identify the mismatched pair:

    (a)

    Epidermal layer - Protective infunction

    (b)

    Eridothecium layer - Helps in dehiscence of anther

    (c)

    Middle layer - Persistent layer

    (d)

    Tapetum - Nutritive in function

  7. Ex-albuminous seeds are ________________

    (a)

    Pea, castor, paddy

    (b)

    Paddy, Coconut, Groundnut

    (c)

    Beans, coconut, castor

    (d)

    Groundnut, pea, beans

  8. Which is the most common type of style seen in monocots

    (a)

    Open type

    (b)

    Closed type

    (c)

    Solid type

    (d)

    Half closed type

  9. 1 x 1 = 1
  10. ________________ is a carotenoid derivative of exine layer which provides resistance to pollen grains.

    ()

    Sporopollenin

  11. 5 x 2 = 10
  12. Explain the conventional methods adopted in vegetative propagation of higher plants.

  13. Name the vegetative propagules of the following plants
    (a) Allium cepa
    (b) Zingiber Officinalis
    (c) Agave
    (d) Colocasia

  14. Draw and label the structure of a typical pollen grain

  15. Define Homogamy with an example

  16. What is pollen-pistil interaction?

  17. 7 x 3 = 21
  18. List any two strategy adopted by bisexual flowers to prevent self-pollination.

  19. What is polyembryony. How it can commercially exploited.

  20. “Endothecium is associated with dehiscence of anther” Justify the statement

  21. What do you know about bee pollen?

  22. Geitonogamy is similar to autogamy. Justify the statement.

  23. What is apospory?

  24. Cite one common feature and one contrast feature shared between apomixis and parthenocarpy

  25. 2 x 5 = 10
  26. ‘Pollination in Gymnosperms is different from Angiosperms’ – Give reasons.

  27. Describe the development of monosporic embryo sac.

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