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प्रश्न
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
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उत्तर
In human beings (mammals) the temperature required for the production and survival of sperms is lower than that of the body temperature. Hence, to provide a suitable temperature of about 2 – 3°C lower than that of body temperature, the testes descend into the scrotal sec at the time of birth.
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संबंधित प्रश्न
What are the different methods of contraception?
The diagram shown below is the longitudinal section of a testis of man. Study it carefully and answer the questions that follow
(i) Label the parts numbered 1 to 3 in the diagram.
(ii) In which part of the testis are the sperms produced?
(iii) State the functions of the parts labelled 1 and 3 in the diagram.
What are the female sex cells in humans called?
Fill in the following blank with suitable word :
The menstrual cycle is controlled by.............
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
The vagina is a muscular tube.
Name the Following
What does this abbreviation stand for FSH?
Choose the Odd One Out:
Freshly released human egg has ______.
Gestation period in man
