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प्रश्न
Choose the correct answer:
First menstrual cycle is known as ___________
पर्याय
menopause
amenorrhoea
puberty
Menarche
उत्तर
First menstrual cycle is known as menarche
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संबंधित प्रश्न
Explain the process of fertilization in human beings.
Explain the process of development in human beings.
Describe, in brief, the changes the uterus undergoes
(i) to receive the zygote.
(ii) if zygote is not formed
Why are testes located outside the abdominal cavity? What is responsible for bringing about changes in appearance seen in boys at the time of puberty?
Mention two functions of human ovaries.
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?
State the role of placenta in the development of embryo.
In male and female reproductive system of human, ______ gland is same.
State the Location:
Prostate gland
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 ______.
