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प्रश्न
What is gestation period? How much is the gestation period in humans?
उत्तर
The period of pregnancy is called the gestation period. It is of 9 months in humans.
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संबंधित प्रश्न
Explain the process of fertilization in human beings.
Suggest three contraceptive methods to control the size of human population, which is essential for the health and prosperity of a country. State the basic principle involved in each.
What are the organs in humans which produce the gametes?
fertilisation in humans can occur only once in a month. Why?
What is ovulation? How often does it happen in human females?
When a fertilised egg E formed in the oviduct of a human female divides repeatedly to form an embryo, the embryo gets implanted in the thick and soft lining of the uterus. After this a disc-like special tissue T develops between the uterus wall and embryo through which all the requirements of the developing embryo (and foetus) are met from the mother's body, The embryo is connected to the tissue T through a string like structure S.
(a) What is the other name of fertilised egg cell E?
(b) What is the name of tissue T?
(c) Name the string-like structure S.
(d) Name two substances which pass from mother's blood to embryo through tissue T and, one type of substance which passes from embryo to mother's blood.
(e) What happens to S when the baby is born? Why?
Mention the two functions of human testis.
Choose the correct answer:
Fertilization occurs in _____________
Complete the following statement by choosing the correct alternative:
Sterilization in female is due to cutting off of ______.
Choose the Odd One Out:
