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Asexual reproduction...

Asexual reproduction

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Asexual reproduction is defined as the phenomenon in which the propagation of own species takes place without the involvement of gametes.
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Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution ? (i) Lower groups of organisms have simpler body design. (ii) Asexual reproduction is common in lower groups. (iii) Asexual reproduction is common in higher groups of organisms. (iv) The high incidence of sexual reproduction in angiosperms and vertebrates. Choose the correct answer given below.

Explain the asexual and sexual reproduction in algae with suitable exampl

Knowledge Check

  • Which of the following statements, support the view that elaborate sexual reproductive process develops much later in the organic evolution? i) Lower groups of organisms have simpler body design ii) Asexual reproduction is common in lower groups iii) Asexual reproduction is common in higher groups of organisms iv) The high incidence of sexual reproduction is in angiosperms and vertebrates.

    A
    i, ii and iii
    B
    i, iii and iv
    C
    i, ii, and iv
    D
    ii, iii and iv

  • A few statements describing certain features of reproduction are given below. Select the options that are true for both sexual and asexual reproduction from the options given: i.Gametic fusion takes place ii.Transfer of genetic material takes place iii.Reduction division takes place iv.Progeny have some resemblance with parents

    A
    i and ii
    B
    ii and iii
    C
    ii and iv
    D
    i and ii

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    Assertion and reasoning questions: In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as I.Assertion : In bee society , all the members are diploid except drones . Reason : Drones are produced by parthenogenesis . A B C D II. Assertion : Offsprings produced by asexual reproduction are genetically identical to the parent . Reason Asexual reproduction involves only mitosis and no meiosis . A B C D III. Assertion : Viviparous animals give better protection to their offsprings . Reason : They lay their eggs in the safe places of the environment . A B C D .

    The characters given below are shown by (i) Extracellular and intracellular digestion (ii) Exclusively marine, radially symmetrical, diploblastic, tissue level of organisation (iii) Bisexual, fertilisation external and indirect development (iv) No asexual reproduction (v) Presence of comb plates

    Assertion : In plants, apomixis is a form of asexual reporduction that minics sexual reproduction. Reason : Apomixis involves the production of seeds without the fusion of gametes.

    Asexual reproductive stage of fungus is called______

    Differentiate between asexual and sexual reproduction.

    It is observed that simple organisms like algae and fungi normally reproduce asexually but before the onset of adverse conditions they shift to sexual reprodction, It is so because sexual reproduction

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