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What is self-incompatibility ? Why does ...

What is self-incompatibility ? Why does self-pollination not lead to seed formation in self-incompartoble species?

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Self incompatibility is a genetic mechanism to prevent self pollination from fertilising the ovules by inhibiting pollen germination or pollen tube growth in the pistil. Due to the inhibition of self fertilisation, self pollination does not lead to seed formation.
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Explore conceptually related problems

Self-pollination means :

Write a short note on self-incompatibility.

Continuous self - pollination of a species develops

Assertion : Self-incompatibility is a genetic mechanism which prevents self-pollination and thereby fertilisation by inhibiting either pollen germination or pollen tube growth in the pistil. Reason : In gametophytic self-incompatibility, the incompatibility reaction is determined by the genotype of the sporophytic tissue of the plant from which the pollen is derived.

Differentiate between: Self pollination and cross pollination

In self pollination pollen is transferred to stigma of the ………flower.

Write notes with 2 to 3 important points: Self- incompatibility

Continued self pollination results in………………

ARIHANT PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS-QUESTIONS FOR PRACTICE (Part I Flower, Pre -Fertilisation: Events and Pollination Short Answer Type Questions)
  1. Name all the haploid cells present in an unfertilised mature embryo s...

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  2. Explain the role of tapetum in the formation of pollen grain wall.

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  3. How does the pollen grow through the style? Explain briefly.

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  4. Make a list of any three outbreeding devices that flowering plants hav...

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  5. Explain the significant of pollination in flowering plants .

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  6. What is hydrophily? Name any hydrophilous plant and give its importan...

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  7. Geitonogamous flowering plants are genetically autogamous but function...

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  8. Explain the function of each of the following (i) Coleorhiza (ii) Ge...

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  9. Where is sporopollenin present in plants? State its significance with...

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  10. What is pollen kit? Write a short note on pollen viability.

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  11. Write the mode of pollination is Vallisneria and water lily. Explain t...

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  12. Trace the development of microsporocyte in the anther to a mature poll...

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  13. What are chasmogamous flowers? Can cross-pollination occur in cleisto...

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  14. Why do some plants have both chasmogamous and cleistogamous flowers?

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  15. Why is geitonogamy also referred to as genetical autogamy?

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  16. Some plants have a mechanism of shedding of pollen before maturation o...

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  17. What is self-incompatibility ? Why does self-pollination not lead to s...

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

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  19. Not all hydrophytes are pollinated by water. Justify by giving two exa...

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  20. Does self incompatibility imposes and restrictions on autogamy? Give r...

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