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Whatis the need and significance of poll...

Whatis the need and significance of pollination in plants ?

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(i) Pollination is a pre-requisite for fertilization in flowering plants. (ii) It brings in mal gametes for fertilization. (iii) Pollen grains bring in hormones for their as well as growth of the ovary. (iv) Premature abscission of ovary is prevented. (v) Pollination helps in gene recombination (vi) It helps in development of hybrid seeds. (vii) Cross pollination produces offspring will combination of characters from two types of varieties.
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BETTER CHOICE PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS -SHORT ANSWER TYPE QUESTIONS
  1. What is Apomixis ? What is its importance ?

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

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

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  4. What is seed dormancy?

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  5. What is tapetum ? What is its function ?

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

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  7. Give advantages of cross-pollination.

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  8. How does endosperm of angiosperms become triploid ?

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  9. What is the significance of double fertilization ?

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

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  11. What is entomophily ? Write its example.

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

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  13. What is ornithophily ? Write two characteristics.

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

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

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

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

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

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  19. Write down six characters of wind pollinated flowers.

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  20. What is double fertilization?

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