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Biology · Textbook solutions

Sexual Reproduction in Flowering Plants

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. · 21 questions

Exercises

21 q
  1. Ex 1 Q1
    Name the parts of an angiosperm flower in which development of male and female gametophyte take place.
  2. Ex 1 Q2
    Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structures formed at the end of these two events.
  3. Ex 1 Q3
    Arrange the following terms in the correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes.
  4. Ex 1 Q4
    With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
  5. Ex 1 Q5
    What is meant by monosporic development of female gametophyte?
  6. Ex 1 Q6
    With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.
  7. Ex 1 Q7
    What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
  8. Ex 1 Q8
    Mention two strategies evolved to prevent self-pollination in flowers.
  9. Ex 1 Q9
    What is self-incompatibility? Why does self-pollination not lead to seed formation in self-incompatible species?
  10. Ex 1 Q10
    What is bagging technique? How is it useful in a plant breeding programme?
  11. Ex 1 Q11
    What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.
  12. Ex 1 Q12
    Why do you think the zygote is dormant for sometime in a fertilised ovule?
  13. Differentiate between:
    Ex 1 Q13 (a)
    hypocotyl and epicotyl;
  14. Ex 1 Q13 (b)
    coleoptile and coleorrhiza;
  15. Ex 1 Q13 (c)
    integument and testa;
  16. Ex 1 Q13 (d)
    perisperm and pericarp.
  17. Ex 1 Q14
    Why is apple called a false fruit? Which part(s) of the flower forms the fruit?
  18. Ex 1 Q15
    What is meant by emasculation? When and why does a plant breeder employ this technique?
  19. Ex 1 Q16
    If one can induce parthenocarpy through the application of growth substances, which fruits would you select to induce parthenocarpy and why?
  20. Ex 1 Q17
    Explain the role of tapetum in the formation of pollen-grain wall.
  21. Ex 1 Q18
    What is apomixis and what is its importance?