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Higher organisms have resorted to sexual...

Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?

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Because of variations, gene pool, vigour and vitality and parental care.
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Knowledge Check

  • Which of the following statements, support the view that eleborate sexual reproduction process appeared much later in the orgabic evolution . i. Lower groups of organisms have simpler body ii. Asexual reproduction is common in higher group. iii. Asexual reproduction is commom in higher groups of organisms. iv. The high incidenc of sexual reproduction occurs in angiosperms and vertebrates. Choose the correct answer from the options given below :

    A
    iand iii
    B
    iand iii
    C
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    D
    ii and iii

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    What is sexual reproduction List its four significances.

    Reproduction is the process by which the living species continues its existence. Lower organisms carry out asexual reproduction while higher plants and animals always show sexual reproduction. Plants reproduce asexually by methos such as fragmentation, vegetative propagation, budding spore formation. For sexual reproduction they form gametes. In animal kingdom, budding fission of different types and parthenogenesis are some of the methods that do not require both the sexes. Though regeneration also forms new individual, it is not considered to be a reproductive process because, basically it is a repair process. The ability to regenerate is lost in higher phyla. In human beings it is restricted only to wound healing. Sexual reproduction is also undergoing lots of experimentation such as cloning which may make females capable of producing their own baby without intervention of any male. What is the modern method of reprodaction aimed at in higher organisms?

    Reproduction is the process by which the living species continues its existence. Lower organisms carry out asexual reproduction while higher plants and animals always show sexual reproduction. Plants reproduce asexually by methos such as fragmentation, vegetative propagation, budding spore formation. For sexual reproduction they form gametes. In animal kingdom, budding fission of different types and parthenogenesis are some of the methods that do not require both the sexes. Though regeneration also forms new individual, it is not considered to be a reproductive process because, basically it is a repair process. The ability to regenerate is lost in higher phyla. In human beings it is restricted only to wound healing. Sexual reproduction is also undergoing lots of experimentation such as cloning which may make females capable of producing their own baby without intervention of any male. Why is regeneration not true method of reproduction?

    Reproduction is the process by which the living species continues its existence. Lower organisms carry out asexual reproduction while higher plants and animals always show sexual reproduction. Plants reproduce asexually by methos such as fragmentation, vegetative propagation, budding spore formation. For sexual reproduction they form gametes. In animal kingdom, budding fission of different types and parthenogenesis are some of the methods that do not require both the sexes. Though regeneration also forms new individual, it is not considered to be a reproductive process because, basically it is a repair process. The ability to regenerate is lost in higher phyla. In human beings it is restricted only to wound healing. Sexual reproduction is also undergoing lots of experimentation such as cloning which may make females capable of producing their own baby without intervention of any male. Which are asexual methods of reproduction in kingdom Animalia?

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