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प्रश्न
Name the Following
Days in the human gestation period.
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उत्तर
280 days
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संबंधित प्रश्न
How many pairs of chromosomes are present in human beings? Out of these how many are sex chromosomes?
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?
Describe in brief the role of testis in human male reproductive system.
In humans, ______ chromosome is responsible for maleness.
Name the following:
Male and Female organs on specific individuals.
Give the function of the following:
Uterus
What is sexual reproduction? What are its essential features?
Choose the Odd One Out:
Choose the Odd One Out:
Choose the Odd One Out:
