Botany - Plant Breeding Book Back Questions

12th Standard EM

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Biology

Time : 00:45:00 Hrs
Total Marks : 30
    10 x 1 = 10
  1. Pick out the odd pair

    (a)

    Mass selection - Morphological characters

    (b)

    Purline selection - Repeated self pollination

    (c)

    Clonal selection - Sexually propagated

    (d)

    Natural selection - Involves nature

  2. Match Column I with Column II
    Column I Column II
    i) William S. Gaud I) Heterosis
    ii) Shull II) Mutation breeding
    iii) Cotton Mather III) Green revolution
    iv) Muller and Stadler IV) Natural hybridization

    (a)

    i – I, ii – II, iii – III, iv – IV

    (b)

    i – III, ii – I, iii – IV, iv – II

    (c)

    i – IV, ii – II, iii – I, iv – IV

    (d)

    i – II, ii – IV, iii – III, iv – I

  3. The quickest method of plant breeding is

    (a)

    Introduction

    (b)

    Selection

    (c)

    Hybridization

    (d)

    Mutation breeding

  4. Desired improved variety of economically useful crops are raised by

    (a)

    Natural Selection

    (b)

    hybridization

    (c)

    mutation

    (d)

    biofertilisers

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

    (a)

    clone

    (b)

    haploid

    (c)

    autopolyploid

    (d)

    genome

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

    (a)

    cloning

    (b)

    heterosis

    (c)

    selection

    (d)

    introduction

  7. Progeny obtained as a result of repeat self pollination a cross pollinated crop to called

    (a)

    pure line

    (b)

    pedigree line

    (c)

    inbreed line

    (d)

    heterosis

  8. Which one of the following are the species that are crossed to give sugarcane varieties with high sugar, high yield, thick stems and ability to grow in the sugarcane belt of North India?

    (a)

    Saccharum robustum and Saccharum officinarum

    (b)

    Saccharum barberi and Saccharum officinarum

    (c)

    Saccharum sinense and Saccharum officinarum

    (d)

    Saccharum barberi and Saccharum robustum

  9. A wheat variety, Atlas 66 which has been used as a donor for improving cultivated wheat, which is rich in

    (a)

    iron

    (b)

    carbohydrates

    (c)

    proteins

    (d)

    vitamins

  10. Which one of the following crop varieties correct matches with its resistance to a disease?

    (a)
    Variety Resistance to disease
    Pusa Komal Bacterial blight
    (b)
    Variety Resistance to disease
    Pusa Sadabahar White rust
    (c)
    Variety Resistance to disease
    Pusa Shubhra Chilli mosaic virus
    (d)
    Variety Resistance to disease
    Brassica Pusa swarnim
  11. 2 x 2 = 4
  12. Differentiate primary introduction from secondary introduction.

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

  14. 2 x 3 = 6
  15. What are the different types of hybridization?

  16. Explain the best suited type followed by plant breeders at present?

  17. 2 x 5 = 10
  18. Write a note on heterosis.

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

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