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प्रश्न
Sketch and label human female reproductive system.
Is the woman responsible for sex-determination of child? Justify your answer.
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उत्तर
Woman is not responsible for sex-determination. Man produces two types of sperms as 22+X or 22+Y, whereas woman produces only 22+X types of ova. Female embryo is produced by union of 22+X sperm and 22+X ovum. Male embryo is produced by union of 22+Y sperm and 22+X ovum. Thus, sex of the embryo depends upon sperms of man.
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संबंधित प्रश्न
Draw a sectional view of human female reproductive system and label the part where
(i) eggs develop.
(ii) fertilisation takes place.
(iii) fertilised egg gets implanted.
Explain how the embryo gets nourishment inside the mother’s body.
What are the different methods of contraception?
Newly formed DNA copies may not be identical at times. Give one reason.
State the main function of the Sperm duct.
Give a biological explanation for the following.
The placenta is an important structure for the development of a foetus.
Mention two functions of human testes.
Mention two functions of human ovaries.
Describe in brief the role of prostate gland in human male reproductive system.
In humans, ______ chromosome is responsible for maleness.
Pollen grains are formed by ______ division in locules of anthers.
Gender of child is determined by the male partner of couple. Explain with reasons whether this statement is true or false.
What is reproduction? List its two types.
Choose the correct answer:
The aim of sexual reproduction _________
Choose the correct answer:
First menstrual cycle is known as ___________
Name the following:
Two accessory glands in the male reproductive system.
Correct sequence in development is ______.
Gestation period in man
Distinguish between Vasa efferentia and Vasa deferentia.
Given below is a group of terms. In the group, one pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.
Female gonad : Ovaries :: Male gonad : ______.
