Question

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Answer 1

Answer:

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Explanation:

Q. 1..ans) In sexual reproduction new organisms are produced from the fusion of a male sex cell with a female sex cell. This fusion of gametes is called fertilisation. Sex cells are also known as gametes.

Q. 2ans)..Asexual reproduction

Only one parent is required, unlike sexual reproduction which needs two parents. Since there is only one parent, there is no fusion of gametes and no mixing of genetic information.

Q. 3 ans)..Foetus

Q. 4ans)...In Vitro Fertilization.

Q. 5:ans.).

In a woman's reproductive years, they will lose roughly 1000 eggs but ovulate only one egg each month.

Q. 6 ans...)..zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.

Q. 7 ans)...This type of fertilization in which the fusion of a male and a female gamete takes place outside the body of the female is called external fertilization.

Q. 8 ans)...Metamorphosis does not take place in humans and other viviparous animals because their offspring are fully formed inside their mother's womb. They do not need any further differentiation of their body parts. However, after their birth there is a further growth and development of the body parts to reach maturity.

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