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प्रश्न
Choose the correct answer:
Binary fission is a method of __________
विकल्प
parthenogenesis
asexual reproduction.
sexual reproduction
none
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उत्तर
Binary fission is a method of asexual reproduction
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संबंधित प्रश्न
Explain the process of birth in human beings.
Name the parts of the human female reproductive system where
i. fertilisation takes place
ii. implantation of the fertilised egg occurs
When a cell reproduces, what happens to its DNA?
What are the female sex cells in humans called?
In human males, the testes lie in the scrotum outside the body because it helps in the
(a) process of mating
(b) formation of sperms
(c) easy transfer of sperms
(d) all the above
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 sex of the child is determined at the time of conception in human beings.
What are the signs of puberty in human males and females?
Cryptorchidism is a condition where ______.
Which one of the following statements about human sperm is correct?
