Write one difference between asexual and sexual mode of reproduction. Which species is likely to have better chances of survival – the one reproducing asexually or the one reproducing sexually? Justify your answer.
CBSE OUTSIDE DELHI - SET 3 2014
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Difference between asexual and sexual mode of reproduction:
The survival of animal reproducing sexually has better chance of survival:
| Asexual reproduction | Sexual reproduction |
| (i) Only one organism is required. | Two separate individuals, male and female are required. |
| (ii) New organism produced is genetically similar to the parent organism. | New organism produced is genetically different from both. |
| (iii) All divisions involved are mitotic. | During gamete formation meiosis occurs, After fertilisation, all divisions are mitotic. |
| (iv) It does not help in evolution. | It helps in evolution. |
- Modes of sexual reproduction allow for greater variations to be generated which are useful for ensuring the survival of the individuals of species during the struggle for existence. Sexually reproductive young ones are more healthy than those reproduced by asexual methods.
- In asexual reproduction, the offsprings are almost identical to their parent because they have the same genes as their parent, so much genetic variation is not possible in asexual reproduction. This is a disadvantage because it inhibits the further evolution of the organism.
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