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What is Apomixis ? What is its importanc...

What is Apomixis ? What is its importance ?

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Apomixis. It is the formation of new individuals or seeds without fertilisation, with embryo growing directly from diploid cells of nuclleus or integument(e.g., Mango, Orange), diploid egg or some other gametophytic cell (e.g., Apple, Rubus). It mimics the sexual reproduction.
Importance. Apomixis has the potential to maintain hybrid vigour indefinitely even in those crop plants (e.g, cereals, legumes) where vegetative reproduction is not possible. Apomixis is genetically controlled. Incorporation of genes for apomixis and prevention of pollination are requireç for this.
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BETTER CHOICE PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS -SHORT ANSWER TYPE QUESTIONS
  1. Differentiate between Hypogeal and Epigeal Germination.

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  2. Define triple-fusion. What product is formed from this fusion? What is...

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  3. What is Apomixis ? What is its importance ?

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  4. Define Cleistogamy. What type of pollination occur in Cleistogamous fl...

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  5. Whatis the need and significance of pollination in plants ?

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  6. What is seed dormancy?

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  7. What is tapetum ? What is its function ?

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  8. Why is the fertilization in angiosperms called double fertilization ?

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  9. Give advantages of cross-pollination.

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  10. How does endosperm of angiosperms become triploid ?

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  11. What is the significance of double fertilization ?

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  12. What is triple fusion ? Where and how does it take place ? Name nuclei...

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  13. What is entomophily ? Write its example.

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  14. Why is the process of fertilization in a flowering plant referred to a...

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  15. What is ornithophily ? Write two characteristics.

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  16. What is the fate of secondary nucleus and integument after fertilizati...

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  17. Write any two differences between apocarpous and syncarpous ovary.

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  18. Draw a labelled diagram of the longitudinal section of a maize grain t...

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  19. Draw a labelled diagram of the longitudinal section of an anatropous o...

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  20. Draw a labelled diagam of the longitudinal section of pistal showing p...

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