Looking for classes? Ksquare Career Institute, Bengaluru →
A country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations A and B twenty years apart. Select the correct interpretation about them.
A
"A" is the earlier pyramid and no change has occurred in the growth rate
B
"A" is more recent and shows slight reduction in the growth rate
C
"B" is earlier pyramid and shows stabilized growth rate
D
"B" is more recent showing that population is very young
Detailed Solution
An age pyramid with a very broad base has a large proportion of young (pre-reproductive) individuals and represents a rapidly growing population.
When measures to reduce population growth take effect, fewer children are born, so the base of the pyramid becomes narrower in relation to the bars above it.
In the figure, pyramid B has the broader base (a steeply triangular shape), so it is the earlier pyramid of the fast-growing population.
Pyramid A has a slightly narrower base, showing that the youngest age groups have shrunk a little; it is therefore the more recent pyramid and shows a slight reduction in the growth rate.
Hence the correct interpretation is that 'A' is more recent and shows a slight reduction in the growth rate.
When measures to reduce population growth take effect, fewer children are born, so the base of the pyramid becomes narrower in relation to the bars above it.
In the figure, pyramid B has the broader base (a steeply triangular shape), so it is the earlier pyramid of the fast-growing population.
Pyramid A has a slightly narrower base, showing that the youngest age groups have shrunk a little; it is therefore the more recent pyramid and shows a slight reduction in the growth rate.
Hence the correct interpretation is that 'A' is more recent and shows a slight reduction in the growth rate.