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प्रश्न
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.
उत्तर
Barrier method:- In this method, the fertilisation of the ovum and the sperm is prevented with the help of barriers such as a condom.
Oral contraceptive method:- In this method, tablets or drugs are taken orally to prevent fertilisation.
Implants and surgical methods:- Contraceptive devices, such as a loop and a copper-T rod, are placed in the uterus to prevent pregnancy. However, they can cause side effects to the uterus.
Some surgical methods such as vasectomy (blocking of the vas deferens in the male body to prevent the transfer of sperms) and tubectomy (blocking of fallopian tubes in the female body to prevent the egg from reaching the uterus) can also be used to block the gamete transfer.
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संबंधित प्रश्न
What is placenta?
State the exact location of the Proximal convoluted tubule.
Which of the following is not a sexually transmitted disease?
(a) gonorrhoea
(b) hepatitis
(c) syphilis
(d) AIDS
The germ cell A produced by a person X is round in shape and it fuses with another germ cell B having a long tail and produced by a person Y. The fusion of A and B produces a new cell C. The cell C divides repeatedly and grows inside the organ D of person X to form E in which the body features of the unborn baby are not much developed. E grows further to form F in which the various body features of the unborn baby (like hands, legs, head, eyes, and ears, etc.) can be identified. F grows further and ultimately forms a baby. What are A, B, C, D, E and F? Out of the two persons X and Y, which one is male and which one female?
The diagram below represents two reproductive cells A and B. Study the same and then answer the questions that follow:
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- Identify the reproductive cells A and B.
- Name the specific part of the reproductive system where the above cells are produced.
- Where in the female reproductive system do these cells unite?
- Name the main hormones secreted by the (1) ovary (2) testes.
- Name an accessory gland found in the male reproductive system and state the function of its secretion.
Explain how the transmission of virus and bacteria diseases be prevented?
Define the following:
Sexual reproduction
Name the Following
Days in the human gestation period.
Mention the importance of the position of the testes in humans.
Which one of the following statements about human sperm is correct?
