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Why are angiosperm anthers called dithec...

Why are angiosperm anthers called dithecous ? Describe the structure of its microsporangium.

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Explore conceptually related problems

Describe the structure of angiospermous embryo sac.

A typical angiosperm anther is:

Why anther is called as tetrasporangiate structure?

(a) Draw a labelled diagram of matured embryo of a dicotyledonous plant. (b) Describe the structure of a matured microsporangium of an angiosperm.

Saprophytic angiosperms are also called

(a) Draw a diagrammatic sketch of a transverse section of an anther of an angiosperm . Label its different walls and the tissue forming microspore mother cells. (b) Describe the process of microsporogenesis upto the formation of a microspore. (c) Write the function of 'germ pore' in a pollen grain of an angiosperm.

Explain the structure of typical angiospermic ovule.

Describe the structure of female gametophyte of an angiosperm .

MODERN PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Revison Exercises (B. Questions From Cbse Board Examinations)
  1. Explain any three advantages the seeds offer to angiosperms.

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  2. Make a list of an y three outbreeding devices that flowering plants ha...

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  3. Why are angiosperm anthers called dithecous ? Describe the structure o...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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