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Botany - Asexual and Sexual Reproduction in Plants Two Marks Questions

12th Standard

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Biology

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. Mention the contribution of Hofmeister towards Embryology.

  2. What is layering?

  3. Distinguish mound layering and air layering.

  4. Explain the conventional methods adopted in vegetative propagation of higher plants.

  5. What are diaspores?

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

  7. Name any four types of grafting

  8. Define totipotency.

  9. Name the two types of tapetum based on its behaviour.

  10. Differentiate between Exine and Intine layers of pollen grain.

  11. Why pollination in gymnosperm is said to be direct?

  12. Define Homogamy with an example

  13. How the pollen grains of Vallisneria protect themselves?

  14. Distinguish between anemophilous flowers and ornithophilous flowers

  15. What is pollen pistil interaction?

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