Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Organisms and Populations

Question:

The shape of pyramids gives the reflection of growth status of a population. Identify the growth status depicted by the given pyramid.

Options:

Expanding

Declining

Exploding

Stable

Correct Answer:

Expanding

Explanation:

The correct answer is Option (1) -Expanding

A population at any given time is composed of individuals of different ages. If the age distribution (per cent individuals of a given age or age group) is plotted for the population, the resulting structure is called an age pyramid.

The shape of the pyramids reflects the growth status of the population - (1) whether it is growing, (2) stable or (3) declining.

The age pyramid of an expanding population has a broad base as the number of pre-reproductive individuals is higher when compared to other age groups. The reproductive individuals are moderate in number and individuals of post-reproductive age group are less.


                          Representation of age pyramids for human population