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Fertilisation in some organisms occur ou...

Fertilisation in some organisms occur outside the body.Name that kind of fertilization. Write its disadvantages.

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Fertilisation in some organisms occur outside the body. Name that kind of fertilisation. Write its disadvantage.

Define external fertilization. Mention its disadvantages.

Knowledge Check

  • Syngamy can occur outside the body of the organism in

    A
    Mosses
    B
    Algae
    C
    Ferns
    D
    Fungi

  • In which of the following sets of organisms does the external fertilization occur?

    A
    Echinodermata and moss
    B
    Hemichrodata and fern
    C
    Amphibian and algae
    D
    Reptile and gymnosperm

  • Assertion: Syngamy occurs in the external medium, i.e. the outside of the body of the organism is called external fertilisation. Reason: Syngamy occurs inside the body of organism is called internal fertilisation.

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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    During sexual reproduction fertilization is an important process.But in most aquatic organisms like fishes,amphibians etc.external fertilization occur.In most terrestrial organisms internal fertilization is common. Write the disadvantages of external fertilization.

    In terrestrial organisms like birds and reptiles, internal fertilization take place While some aquatic organisms show external fertilisation What is the disadvantage of external fertilization

    In flowering plants, double fertilization occurs during sexual reproduction. One of the events of double fertilization is triple fusion. Name the other event.

    In flowering plants, double fertilization occurs during sexual reproduction. One of the events of double fertilization is tripe fusion name the other event

    Name some micro organisms live without oxygen?

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