Animal Reproduction -
Reproduction is the ability to produce new organism of its own type. It is meant to increase their number.
Reproduction includes -
(i) Replication of DNA
(ii) Cell division
(iii) Formation of reproduction units
(iv) Division into offsprings.
Animals reproduce mainly in two ways -
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S.NO.
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ASEXUAL
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SEXUAL
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1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
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It is uniparental
Gametes are not formed
Reproductive organs are not needed
No fertilisation
Offsprings are similar to parent
New characters do not appear
No variation
No evolution
Definite process
Generation leads to extinction
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uni / biparental
formed
needed.
fertilisation occur
different
appear
variation present
evolution takes place
Indefinite process
Not so
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