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Botany - Asexual and Sexual Reproduction in Plants Model Question Paper

12th Standard

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Biology

Time : 02:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. An eminent Indian embryologist is ______.

    (a)

    S.R. Kashyap

    (b)

    P. Maheswari

    (c)

    M.S. Swaminathan

    (d)

    K.C. Mehta

  2. Identify the correctly matched pair.

    (a)

    Tuber - Allium Cepa

    (b)

    Sucker - Pistia

    (c)

    Rhizome - Musa

    (d)

    Stolon - Zingiber

  3. Pollen tube was discovered by ______.

    (a)

    J.G. Kolreuter

    (b)

    G.B. Amici

    (c)

    E. Strasburger

    (d)

    E. Hanning

  4. Identify the incorrect pair

    (a)

    sporopollenin - exine of pollen grain

    (b)

    tapetum – nutritive tissue for developing microspores

    (c)

    Nucellus – nutritive tissue for developing embryo

    (d)

    obturator – directs the pollen tube into micropyle

  5. Which of the following represent megagametophyte?

    (a)

    Ovule

    (b)

    Embryo sac

    (c)

    Nucellus

    (d)

    Endosperm

  6. 6 x 1 = 6
  7. Conidia

  8. (1)

    Zingiber officinale

  9. Binary fission

  10. (2)

    hilum, micropyle and chalaza of ovule lie adjacent to one another

  11. Rhizome

  12. (3)

    Colocasia

  13. Corm

  14. (4)

    Aspergillus

  15. Offset

  16. (5)

    Pistia stratiotes

  17. Campylotropous

  18. (6)

    Bacteria

    7 x 2 = 14
  19. What is reproduction?

  20. List out two sub-aerial stem modifications with example.

  21. What is layering?

  22. Differentiate Grafting and Layering.

  23. Distinguish mound layering and air layering.

  24. What are diaspores?

  25. Define totipotency.

  26. 5 x 3 = 15
  27. List any two strategy adopted by bisexual flowers to prevent self-pollination.

  28. What is endothelium

  29. Define the term Diplospory

  30. What is Mellitophily?

  31. List out the functions of tapetum.

  32. 2 x 5 = 10
  33. Write short note on Heterostyly.

  34. What is endosperm. Explain the types.

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