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Why does the zygote divides only after t...

Why does the zygote divides only after the division of Primary endosperm cells ?

Text Solution

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The primary endosperm nuclear (PEN) divides prior to zygotic division and form endosperm . Endosperm acts as a nutritive tissue and nourishes the developing embryo.
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Assertion : Embryogenesis is the development of embryo from the zygote. Reason : Cell division increase the number of cells in the developing embryo.

Why is cell division important?

Knowledge Check

  • In Haplopappus gracilis , number of chromosomes in cells of nucellus is 4. What will be the chromosome number in Primary endosperm cell ?

    A
    8
    B
    12
    C
    6
    D
    2

  • In Haplopappus gracilis, number of chromosomes in cells of nucellus is 4. What will be the chromosome number in Primary endosperm cell ?

    A
    8
    B
    12
    C
    6
    D
    2

  • This is the sexual union of young individuals produced immediately after the division of the adult parent cell by mitosis

    A
    Paedogamy
    B
    Hologamy
    C
    Merogamy
    D
    Anisogamy

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    Embryo is the structure developed from a zygote after many divisions. Embryo undergoes many changes until it becomes embryo proper . Give the structure of a mature embryo .

    Mention the ploidy of the following: protonemal cell of a moss, primary endosperm nucleus in dicot, leaf cell of a moss, prothallus cell of a fern, gemma cell in Marchantia, meristem cell of monocot, ovum of a liverwort, and zygote of a fern.

    Why does the emf of Leclanche cell decrease?

    The sexual unioin of young individuals produced immediately after the division of the parent cell is called____________

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