Question

Which of the following country’s population does not have a triangular shaped age sex pyramid?

• A. Australia
• B. Bangladesh
• C. Nigeria
• D. Mexico

Answer 1

The Correct Option is A

Let's analyze the age-sex pyramids of the countries mentioned:

(A) Australia: Australia has a rectangular-shaped age-sex pyramid. This shape is typical of more developed countries, where there is a relatively stable population with lower birth rates and longer life expectancies. The pyramid's shape reflects the aging population with fewer children being born, and a larger proportion of the population is in the middle and older age groups.

(B) Bangladesh: Bangladesh, a developing country, has a triangular-shaped age-sex pyramid, typical of countries with high birth rates and lower life expectancy. The pyramid shows a large number of children at the base and a smaller number of older individuals at the top, which indicates rapid population growth.

(C) Nigeria: Nigeria also has a triangular-shaped age-sex pyramid. It is a country with a high birth rate and a relatively young population, which results in a wide base and a narrow top in its population pyramid.

(D) Mexico: Like Bangladesh and Nigeria, Mexico has a triangular-shaped age-sex pyramid, as it is a developing country with high birth rates and a youthful population.

The only country from the list that does not have a triangular-shaped age-sex pyramid is Australia, as it has a more stable, rectangular-shaped population pyramid.

Thus, the correct answer is (A) Australia.

Answer 2

Australia’s age-sex pyramid reflects a more stable or aging population, unlike developing countries like Bangladesh or Nigeria, which exhibit triangular pyramids typical of high birth rates.
The correct option is (A): Australia