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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
Explain the process of fertilization in human beings.
State the changes that take place in the uterus when Female gamete/egg is not fertilised
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?
What is the scientific name of birth canal?
Which among the following are not the functions of testes at puberty?
(i) formation of germ cells
(ii) secretion of testosterone
(iii) development of the placenta
(iv) secretion of estrogen
During adolescence, several changes occur in the human body. Mark one change from the following associated with sexual maturation in boys.
The normal body cell of an organism contains 28 pairs of chromosomes. The number of chromosomes present in its germ cell will be
(a) 28
(b) 14
(c) 56
(d) 42
State the role of placenta in the development of embryo.
In male and female reproductive system of human, ______ gland is same.
What is sexual reproduction? What are its essential features?
