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A mature, embryo-sac in a flowering plan...

A mature, embryo-sac in a flowering plant may possess 7-cells, but 8-nuclei. Explain with the help of a diagram only.

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MODERN PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Revison Exercises (B. Questions From Cbse Board Examinations)
  1. Why are angiosperm anthers called dithecous ? Describe the structure o...

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  2. Double fertilization is resported in plants of both castor and groundn...

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  3. A mature, embryo-sac in a flowering plant may possess 7-cells, but 8-n...

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  4. Metion the ploidy of the different types of cells present in the femal...

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  5. In a flowering plant is microscope mother cell produce four male gamet...

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  6. Draw a well labelled diagram of L. S. of an embryo of grass.

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  7. Draw a T.S. of a young anther of an angiosperm Label the different lay...

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  8. (a) You are given castor and bean seeds. Which one of the two would yo...

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  9. Describe the stages of embryo development in a dicot plant.

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  10. Fertilization is essential for the production of seed, but in some ang...

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  11. Name the cell from which the endosperm of coconut develops. Give the c...

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  12. (a ) Trace the development ofmegaspore mother cell up to the formation...

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  13. Give reasons why: (i) Most zygotes in angiosperms divide only afte...

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  14. How does the megaspore mother cell develop into 7-celled, 8 nucleate e...

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  15. (a) Draw a labelled diagram of the sectional view of a typical anatrop...

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  16. With a neat, labelled diagram, describe the parts of a mature angiospe...

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  17. (a) Draw a diagrammatic sectional view of a mature anatropous ovule an...

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  18. a) Coconut palm is monoecious, while date palm is dioecious. Why are t...

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  19. (a) Explain the phenomenon of double fertilization . (b) Draw a lab...

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  20. a) Why does endosperm development precede development in angiosperm s...

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