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प्रश्न
In human males, the testes lie in the scrotum outside the body because it helps in the ______.
विकल्प
process of mating
formation of sperms
easy transfer of sperms
all the above
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उत्तर
In human males, the testes lie in the scrotum outside the body because it helps in the formation of sperms.
Explanation:
The testes lie outside the body in the scrotum because sperm production requires low temperature, which is provided by the scrotum.
संबंधित प्रश्न
Given below are diagrams showing the different stages in the process of fertilisation of an egg. in the human female reproductive tract.
Study the diagrams and answer the questions:
1) Arrange the letters given below each diagram in a logical sequence to show the correct order in the process of fertilisation.
2) Where does fertilisation normally take place? and What is ‘Implantation’ that follows fertilisation?
3) Mention the chromosome number of the egg and zygote in humans.
4) Explain the term ‘Gestation’. How long does Gestation last in humans?
5) Draw a neat, labelled diagram of a mature human sperm.
What is the name of the process in which thickened uterus lining alongwith blood vessels is removed from the body of a human female through vaginal bleeding?
Write the names of female sex hormones.
Mention two functions of human ovaries.
Which one of the following best describes the function of the umbilical cord? It :
(a) feeds the embryo with digested substances.
(b) conveys nutrients and wastes to and from the embryo respectively
(c) removes waste matter from the embryo to the mother's blood.
(d) supplies oxygenated blood from the mother to the embryo.
Describe the role of the following in human beings:
(i) Seminal vesicles
(ii) Prostate gland
Explain how the sex of the child is determined at the time of conception in human beings.
Choose the Odd One Out:
Reproductive organs are also considered endocrine glands.
Match Columns I and II and select the correct option.
| Columns I | Columns II | ||
| i. | Transfer of sperms in the female genital tract. | a. | Gestation |
| ii. | Delivery of baby | b. | Fertilization |
| iii. | Fusion of male and female gamete. | c. | Parturition |
| iv. | Formation of sperms and ovum | d. | Insemination |
| e. | Gametogenesis |
