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प्रश्न
Choose the correct answer:
The aim of sexual reproduction _________
विकल्प
over production
continuity of race
low production
none
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उत्तर
The aim of sexual reproduction continuity of race
APPEARS IN
संबंधित प्रश्न
Describe the function of placenta.
Where is the female gamete formed in humans?
Which part of the human body produces sperms?
What name is given to the fusion of sperm and ovum?
The male gametes in a flower and in a human are produced respectively in :
(a) stigma and ovary
(b) anther and style
(c) ovary and testes
(d) anther and testes
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?
Complete the following statement by choosing the correct alternative:
Sterilization in female is due to cutting off of ______.
Define the following:
Sexual reproduction
Choose the Odd One Out:
Given below are the events in human reproduction. Write them in correct sequential order.
Insemination, gametogenesis, fertilisation, parturition, gestation, implantation
