1 Mark Questions
Question 1 : Write any two major reasons for the population explosion in India.
Answer : Two major reasons for the population explosion in India are:
i) illiteracy
ii) High birth rate
Question 2 : Give the biological/technical terms for the following.
Statistical study of human population.
Answer : Demography is statistical study of human population.
Question 3 : Write any two major reasons for the population explosion in the world.
Answer : i) Abundance of food.
ii) Decreased death rate.
Question 4 : Differentiate between the natality and mortality. (definition)
Answer : Natality : It is defined as the total number of live births per 1,000 individuals of a population per year.
Mortality : It is defined as the total number of deaths per 1,000 individuals of a population per year.
Question 5 : Explain the term natality.
Answer : It is defined as the total number of live births per 1,000 individuals of a population per year.
Question 6 : Insert a key word in place of ‘^’ in the statement given below and complete it. Birth rate is the number of ‘^’ births per thousand of the population per year.
Answer : Natality or birth rate is the number of live birth per thousand of the population per year.
Question 7 : Mention three main reasons for the sharp rise in human population in the world.
Answer : i) Decreased death rate due to advanced medical facilities.
ii) Increase in the food availability due to advanced agricultural technology.
iii) Fewer infant deaths.
Question 8 : Explain the term death rate.
Answer : Death rate is the number of deaths per thousand of the population per year.
Question 9 : Mention three reasons why the growth of population has not been appreciably checked in India.
Answer : i) Illiteracy
ii) Desire for a male child.
iii) Children are regarded as God’s gift.
Question 10 : State true or false. If false, write the correct statement by changing the incorrect word/words only.
Mortality is the number of deaths per thousand of the population per decade.
Answer : The statement is false. Mortality is the number of deaths per thousand of the population per year.
Question 11 : Mention two reasons for the high birth rate in India.
Answer : i) Advancement of medical science, so there is low infant mortality.
ii) Better health care facilities.
Question 12 : Explain the term birth rate.
Answer : Birth rate is the number of live birth per thousand of the population per year.
Question 13 : Given below is the biological statement which is incomplete and hence incorrect. Rewrite the correct form of the statement by inserting a suitable word/words at the right place. Do not delete any word already given in the statement.
Death rate is the number of deaths of the given population per year.
Answer : Death rate is the number of deaths per thousand of the population per year.
Biology Questions and Answers ICSE Class 10 :
Cell Cycle and Cell Division | Genetics | Absorption by Roots| Transpiration | Photosynthesis | Circulatory System | Excretory System | Nervous System | Endocrine System | Reproductive System | Population and Its Control | AIDS to Health and Health Organisation | Pollution