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Botany - Plant Breeding Three Marks Questions

12th Standard EM

    Reg.No. :


Time : 00:45:00 Hrs
Total Marks : 30
    10 x 3 = 30
  1. How Rhizobium acts as an efficient bio- fertiIizer?

  2. Azolla increases the yield of paddy crop - support your answer.

  3. Mention any three advantages of Arbuscular mycorrhizal association.

  4. What makes the Trichoderma an effective bio-pesticide?

  5. Write a note on Green Manuring.

  6. Write a short note on autopolyploidy with an example.

  7. Given below are the examples of symbiotic association in which one partner was mentioned. Write the name of the mutual co-partners.
    (a) Azolla fem + _________
    (b) Root nodules of legume plants + ______
    (c) phycomycetous fungi + ________

  8. Provide an example for each of the following agricultural components. (i) Bio pesticide (ii) Green manure crop (iii) Bio-FertiIzier

  9. Yesterday, Ramu visited his friend's Orchard, where in he noticed few flowers of certain guava trees are covered using thin paper bags.
    (I) Name the process carried out there.
    (ii) Why it was done so?

  10. Who am I?
    (I) Father of Green Revolution.
    (il) Father of Indian Green Revolution


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