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प्रश्न
Define the following:
Sexual reproduction
उत्तर
Sexual reproduction: It is the type of reproduction in which the offspring are formed after the fusion of gametes.
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संबंधित प्रश्न
Name any three parts of the female reproductive system in human beings. Write one function of each.
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.
A single highly coiled tube where sperms are stored gets concentrated, and mature is known as ______
Mention two functions of human testes.
Which structure in human female is equivalent to the testes in the male?and in what respect the structures are equivalent?
One of the following is not a part of the human male reproductive system. This is
(a) testis
(b) oviduct
(c) seminal vesicle
(d) prostrate gland
When a female child is born, her ovaries already contain thousands of immature eggs (or ova) contained in immature structures A. On maturing, A bursts open and an egg shoots out of the ovary in a process called B. The process B starts in the females at puberty and occurs again and again after a time period x. Before every occurrence of process B, the inner lining of uterus becomes thick and soft with lots of blood vessels in it. When the egg cell gets fertilised by a sperm, then an event C occurs in the life of mature human female which lasts for time period y leading to the birth of baby. If, however, the egg cell released by the ovary does not get a sperm to fuse with, then the thick and soft inner lining of uterus breaks down and comes out of the female's body in an event called D. The occurrence of event D is controlled by chemical substances E.
(a) What are A?
(b) What is process B?
(c) What is the time period x?
(d) Name the event C.
(e) How much is the time period y?
(f) What is the name of process D?
(g) Name the chemical substances E.
Define the term puberty.
Sketch and label human female reproductive system.
Is the woman responsible for sex-determination of child? Justify your answer.
Testosterone is produced by:
