Biology [1 Mark Question Answer]

The symbol of family welfare in our country is an 'Inverted Red Triangle'.

Population density: It is the number of people per square kilometer at any given time.
Tubectomy is the operation made in women to prevent the flow of eggs into the oviduct.

Mortality

Population density

Tubectomy is the surgical method of contraception in human female.

The age restrictions for marriages by law for boys and girls in India are:
Boys: 21 years
Girls: 18 years

The two reasons for the rapid increase of population in India recently:
(i) Advancement of science and technology
(ii) Better health care facilities

The two important methods for birth control are:
(i) Vasectomy
(ii) Tubectomy

Demography

Growth rate

Population density: It is the total number of individuals of a particular species in relation to unit area at any given time.

Natality: It is the number of live births per thousand people of the population per year.

Death rate: It is the number of deaths per thousand people of the population per year.

Birth rate: It is the total number of live births per thousand people of the population per year.

Test-Tube baby: A test tube baby is one which is developed from an egg that was fertilized outside the body and then implanted in the uterus of the biological or surrogate mother.

Abstainence: It is the act or practice of refraining from sexual intercourse.

Rhythm method: It is a natural method of birth control in which the couple attempts sexual intercourse a week before and a week after the menstrual cycle.

Birth control: It is an attempt to control the number of births in a family so that a couple may not have more than two children.

Deforestation: It is the removal of a forest or stand of trees from an area and thereafter that area is converted to a no forest use.

Sanitation: It refers to the formulation and application of measures intended to protect public health.

Population: It is the total number of individuals of a species found in a particular area.