Organisms and Populations Question 63
63. Certain characteristic demographic features of developing countries are
[2004]
(a) high fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution
(b) high fertility, high density, rapidly rising mortality rate and a very young age distribution
(c) high infant mortality, low fertility, uneven population growth and a very young age distribution
(d) high mortality, high density, uneven population growth and a very old age distribution
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Answer : a
Hints & Solutions
(a) Demography is the study of population in all aspects. Fertility refers to the number of children per couple. Mortality rate is the average number of natural deaths per unit population per unit time. Age distribution refers to the proportionate occurrence of individuals of the three age groups. Developing countries usually have high rate of population growth, because of increasing fertility and declining mortality. John Graunt is known as the father of demography.
