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What is meant by monosporic development ...

What is meant by monosporic development of female gametophyte?

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Monosporic type of female gametophyte (embryo sae). In this case only one of the four megaspores takes part in the formation of embryo sac. Here, embryo sac is formed by three divisions of functional megaspore. The lowermost chalazal megaspore forms the embryo sae. Eight nuclei are formed in embryo sac, four at micropylar end and four at chalazal end. One nucleus from each shifts inwards to form two polar nuclei in the centre of embryo sac.
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MODERN PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS-NCERT (Exercise Questions)
  1. Name the parts of an angiosperm flower in which development of male an...

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  3. Arrange the following terms in the correct development sequence : Poll...

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  4. With a neat, labelled diagram, describe the parts of a typical angiosp...

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  5. What is meant by monosporic development of female gametophyte?

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  6. With a neat diagram explain the 7-celled, 8-nucleate nature of the fem...

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  7. What are chasmogamous flowers ? Can cross-pollination occure in cleist...

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  8. Mention two strategies evolved to prevent self-pollination in flowers.

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  9. What is self-incompatibility? Why does self-pollination not lead to se...

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  10. What is bagging technique? How is it useful in a plant breeding progra...

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  11. What is triple fusion? Where and how does it take place? Name the nucl...

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  12. Why do you think the zygote is dormant for sometime in a fertilized ov...

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  13. Differentiate between: (a) Hypocotyl and epicotyl, (b) Coleoptil...

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  14. Why is apple called a false fruit? Which part(s) of the flower forms t...

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  15. What is meant by emasculation? When and why does a plant breeder emplo...

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  16. If one can induce parthenocarpy through the application of growth subs...

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  17. Explain the role of tapetum in the formation of pollen-grain wall .

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  18. What is apomixis and what is its importance ?

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