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Mention various devices to discourage se...

Mention various devices to discourage self pollination and encourage cross pollination in flowering plants.

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The devices to discourage self pollination are

Flowering plants have developed many devices to discourage self - pollination and to encourage cross - pollination except

Flowering plants have developed certain outbredding devices to discourage self-pollination and encourage cross-pollination. One of these is not an examples of such outbreeding device.

Flowering plants have developed many devices to discourage self-pollination and to encourage cross-pollination. Explain three such devices.

Assertion : Flowering plants have developed many out breeding devices to discourage self-pollination and to encourage cross-pollination. Reason : Continued self-pollination result in ibreeding depression.

Differentiate between self pollination and cross pollination .

(a) State one difference and one similarity between geitonogamy and xenogamy. (b) Explain any three devices developed in flowering plants to discourage self pollination and encourage cross pollination.

Device for self - pollination is :

MODERN PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Revison Exercises (B. Questions From Cbse Board Examinations)
  1. (a ) Trace the development ofmegaspore mother cell up to the formation...

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

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

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

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

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

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

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

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

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  10. (a) Explain the different ways apomictic seeds can develop. Give an ex...

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  11. A flower of tomato plant following the process of sexual reproduction ...

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  12. (a) Describe is sequence the process of microsporogenesis in angiosper...

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  13. (a) As a senior biology student you have been asked to demonstrate to ...

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  14. (a) A capsicum flower has 240 ovules in its ovary . But , it produces ...

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  15. A flower of brinjal has 520 ovules in its ovary . However, it produces...

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  16. Read the following statement and answer the questions that follows: ...

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  17. (a) When a seed of an orange is squeezed , many embryos , instead of...

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  18. Mention various devices to discourage self pollination and encourage c...

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  19. The embryo sac in female gametophyte is seven cells and eight nucleate...

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  20. List the charges that occur when an ovule matures into seed.

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