Rekha learned during her sister's prenatal check-up that the placenta plays a crucial role in supporting the embryo's development.

Question

CASE_STUDIESFertilisation and Embryo Development in HumansCBSE PYQ2 sub-questions

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Name three techniques/devices used by human females to avoid pregnancy. Mention the side effects caused by each.

What will happen if in a human female (a) fertilisation takes place, (b) an egg is not fertilised ?

Fertilisation and Embryo Development in Humans

Reproductive Health and Contraception

The incorrect statement about placenta is :

The incorrect statement about placenta is :

The incorrect statement about placenta is :

A zygote is formed by the fusion of a male gamete and a female gamete. The number of chromosomes in the zygote of a human is :