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Higher organisms have resorted to sexual...

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

Text Solution

Verified by Experts

Because of
(i) Sexual reproduction brings variations which help to bear changes on the environment.
(ii) It helps in the evolution of species.
(iii) Variation occurs due to crossing over during gametogenesis and random fusion of gametes during fertilization.
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Higher organisms have resorted to sexual reproduction in spite of its complexity. Comment.

Offsprings formed due to sexual reproduction have better chances of survival.Why?

Knowledge Check

  • In haploid organisms that undergo sexual reproduction. The stage in the life cycle when meiosis occurs

    A
    During gametogenesis
    B
    During gametic fusion
    C
    During gametic transfer
    D
    During post-zygotic stage

  • Read the following statements and find out the incorrect statements. a. Asexual reproduction is common among single celled organisms, and in plants and animals with relatively complex organisations. b. In yeast, the division is unequal and small buds are produced that remain attached initially to the parent cell which eventually gets separated and mature into new yeast organism (cells). c. Vegetative reproduction is also a type of asexual reproduction. d. While in animals and other simple organisms the term vegetative reproduction is used unambiguously, in plants, the term asexual reproduction is frequently used. e. Water hyacinth is also called 'Terror of Bengal.'

    A
    a and d
    B
    b and c
    C
    a and e
    D
    b and d

  • Ecologists assume that over a period of time, the organism bad evolved adaptations to optimise its survival and reproduction in its habitat through

    A
    Predation
    B
    Migration
    C
    Regulation
    D
    Natural selection

    • Similar Questions

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    Sexual reproduction is very common in higher plants to produce young ones that shows variation. a) Name the product formed in sexual reproduction in considered as vital link b)Give its significance.

    Why is meiosis necessary in sexually reproducing organisms?

    The offspring formed by sexual reproduction have better chances of survival.Why?

    Offspring formed due to sexual reproduction have better chance of survival. Why? Is this statement always true?

    Assertion: The events of the sexual reproduction though elaborate and complex, follow a regular sequence. Reason: Sexual reproduction is characterised by the fusion (or fertilisation) of the male and female gametes, the formation of zygote and embryogenesis.

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