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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 incompatible species?

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This is a genetic mechanism and prevents self pollen from fertilising the ovules by inhibiting pollen germination or pollen tube grwothh in the pistil
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KUMAR PRAKASHAN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Section -E (Solution of NCERT Exemplar)(Very Short Answer Type Questions)
  1. Name the component cells of the egg apparatus in an embryo sac

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  2. Name the part of gynoecium that determines the compatible nature of po...

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  3. Name the common function that cotyledons and nucellus perform

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  4. Complete the following flow chart Pollen Mother cell rarr Pollen tetra...

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  5. Indicate the stages where meiosis and mitosis occur (1, 2 or 3) in the...

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  6. In the diagram given below, show the path of a pollen tube from the po...

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  7. Name the parts of pistil which develop into fruit and seeds

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  8. In case of polyembryony, if an embryo develops from the synergid and a...

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  9. Can an unfertilised, apomictic embryo sac give rise to a diploid embry...

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  10. Which are the three cells found in a pollen grain when it is shed at t...

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

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  12. Name the type of pollination in self-incompatiable plants

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

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  14. Which is the triploid tissue in a fertilised ovule? How is the triploi...

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  15. Are pollination and fertilisation necessary in apomixis ? Give reasons

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  16. Identify the type of carpel with the help of diagrams given below

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  17. How is pollination carried out in water plants?

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  18. What is the function of the two male gametes produced by each pollen g...

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