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प्रश्न
For how much time does menstruation last in human females (or women)?
उत्तर
The menstruation cycle lasts for 3-5 days in a female.
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संबंधित प्रश्न
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.
Where does a fertilised ovum develop into a baby in the human body?
What is the role of seminal vesicles and prostrate gland in human male reproductive system?
Name the organs which produce ova (or egg cells) in human females.
X and Y are two human beings. The organ A in the reproductive system of X releases a mature gamete B once a month which goes into a tube-like structure C through a funnel-like opening. The organ D in the reproductive system of Y makes and releases gametes E which pass through a duct F and are introduced by an organ of Y, into the body of X. B and E fuse together in C to form a new cell G. The cell G divides repeatedly to form a ball of cells H which gets embedded in the lining of organ I of reproductive system of X where it grows and develops into a baby.
(a) Name (i) organ A, and (ii) gamete B.
(b) Write two names of tube-like structure C.
(c) Name (i) organ D, and (ii) gamete E.
(d) Write two names of duct F.
(e) Name (i) cell G (ii) ball of cells H, and (iii) organ I.
(f) Out of X and Y, which one is (i) male, and (ii) female?
Explain how the transmission of virus and bacteria diseases be prevented?
Name the following:
Male and Female organs on specific individuals.
Give the function of the following:
Uterus
The below diagram is of a developing embryo is a mother’s womb:
(i) Write the functions of the placenta, amnion, and umbilical cord.
(ii) How are the waste products of a fetus removed?
(iii) What is the gestation period?
