Advertisements
Advertisements
प्रश्न
What is the main difference between sperms and eggs of humans? Write the importance of this difference.
उत्तर
Difference between sperms and eggs of humans:-
The major genetic differences lies in the difference in sex chromosome of sperm (male gamete) and egg( female gamete). Sperm has Y chromosome as sex chromosome, while egg has X chromosome as sex chromosome. There is a marked difference in size, shape, metabolic activity, cytoplasm content, motility, etc in the sperms and eggs.
Human eggs are much larger than sperms and are highly metabolically active cells. They contain more amount of cytoplasm.
Importance of the difference:-
The difference in the sperm and egg cells maintains the continuity of the species generation after generation by the process of reproduction.
APPEARS IN
संबंधित प्रश्न
Write the functions of the following organs of reproduction:
a. Ovaries
b. Seminal vesicle and prostate glands
Write the functions of the following parts in human female reproductive system:-
(i) Ovary
(ii) Oviduct
(iii) Uterus
What are the changes seen in girls at the time of puberty?
Which part of the human body produces ova?
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?
Explain how the transmission of virus and bacteria diseases be prevented?
Choose the correct answer:
Binary fission is a method of __________
Choose the correct answer:
When pregnancy does not occur, the life of corpus luteum is about _____________
Name the following:
Two accessory glands in the male reproductive system.
What is inhibin? State its functions.
