Botany - Plant Breeding Model Question Paper

12th Standard EM

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Biology

Time : 02:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. The quickest method of plant breeding is

    (a)

    Introduction

    (b)

    Selection

    (c)

    Hybridization

    (d)

    Mutation breeding

  2. Plants having similar genotypes produced by plant breeding are called

    (a)

    clone

    (b)

    haploid

    (c)

    autopolyploid

    (d)

    genome

  3. Importing better varieties and plants from outside and acclimatising them to local environment is called

    (a)

    cloning

    (b)

    heterosis

    (c)

    selection

    (d)

    introduction

  4. Crosses between the plants of the same variety are called

    (a)

    interspecific

    (b)

    inter varietal

    (c)

    intra varietal

    (d)

    inter generic

  5. Jaya and Ratna are the semi dwarf varieties of

    (a)

    wheat

    (b)

    rice

    (c)

    cowpea

    (d)

    mustard

  6. 4 x 1 = 4
  7. Removal of anthers from a flower to overcome self - pollination and the phenomenon is ___________

    ()

    Emasculation

  8. The period of opening of a flower is___________

    ()

    Anthesis

  9. ___________ was the first person to develop world's first hybrid of sorghum

    ()

    N.G.P. Rao

  10. The term pureline was coined by __________

    ()

    Johannsen

  11. 5 x 1 = 5
  12. Dwarf Wheat

  13. (1)

    Atomita - 2

  14. Saline resistant rice

  15. (2)

    Clostridium

  16. Okra / Bindhi

  17. (3)

    Norin 10

  18. Cow pea

  19. (4)

    Pusa Komal

  20. Free-living N2 fixing biofertilizer

  21. (5)

    Pusa A-4

    7 x 2 = 14
  22. Differentiate primary introduction from secondary introduction.

  23. How are microbial innoculants used to increase the soil fertility?

  24. What is meant by domestication of plants?

  25. What is plant breeding?

  26. Define acclimatization.

  27. What is Heterosis?

  28. What are polyploids? Mention its nature.

  29. 4 x 3 = 12
  30. What are the different types of hybridization?

  31. Name any three eminent plant breeders of Indian origin.

  32. Write a note on Green Manuring.

  33. Point out the objectives of plant breeding.

  34. 2 x 5 = 10
  35. Write a note on heterosis.

  36. List out the new breeding techniques involved in developing new traits in plant breeding.

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