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प्रश्न
Choose the correct answer:
When pregnancy does not occur, the life of corpus luteum is about _____________
विकल्प
4 days
10 days
14 days
28 days
उत्तर
When pregnancy does not occur, the life of corpus luteum is about 10 days
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संबंधित प्रश्न
Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong :
Prostate gland, Cowper’s gland, seminal vesicle, seminiferous tubules
Where is the female gamete formed in humans?
Do all organisms give birth to individuals like humans?
What is the frequency of menstrual cycle in human females (or women)?
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?
Rewrite the terms in the correct order so as to be in a logical sequence.
Implantation, ovulation, child birth, gestation, fertilisation.
Give the function of the following:
Uterus
Define the following:
Sexual reproduction
______ is a lytic enzyme released by the sperm.