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Some vascular plants have swimming sperm...

Some vascular plants have swimming sperm and others do not. How do male and female gametes meet in (a) plants that have swimming sperms, and (b) those that do not ?

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Knowledge Check

  • Motile sperm cells swim through an external film of water to reach female gametes in all of the following groups except for :

    A
    Pteridophyta
    B
    Spermatophyta
    C
    Lycopodiophyta
    D
    Bryophyta
    • ICSE-PLANT KINGDOM -Test Your Progress (Short/Long Answer Type Questions )
    1. Some vascular plants have swimming sperm and others do not. How do ma...

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    2. Mention two common characters shared by all gymnosperms

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    3. The development of endosperm in gymnosperms differs from that of angi...

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    4. What are the possible advantages of having the sex organs on the unde...

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    5. What are the advantages of seeds over spores as a means of reproducti...

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    6. Distinguish between moss protonema and green alga filament.

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    7. Give an illustrated account of the life cycle of a moss.

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    8. Write short notes on Protonema

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    9. Write short notes on : Alternation of generation in bryophytes

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    10. Write short note on Indusium.

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    11. Write short notes on Circinate vernation

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    12. What are the characteristics that define plants ?

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    13. What are the general characteristics of nonvascular plants, and what ...

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    14. Draw a diagram to describe the life cycle of the moss, pointing out s...

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    15. What are the general characteristics of vascular plants, and how do f...

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    16. List five differences between monocots and dicots.

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    17. Angiosperms are the most dominant of plant groups'. Confirm or contra...

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    18. How do bryophytes differ from pteridophytes and thallophytes ?

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    19. What are the major points of difference between bryophytes and pterid...

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    20. How do angiosperms differ from gymnosperms ?

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