Home
Class 12
BIOLOGY
In a growing population of a country....

In a growing population of a country. `

A

reproductive and pre-reproductive individuals are equal in number

B

reproductive individuals are less than the post-reproductive individuals

C

pre-reproductive individuals are more than the reproductive individuals

D

pre-reproductive individuals are less than the reproductive individuals

Text Solution

Verified by Experts

In a growing population younger population (or pre-reproductive individuals) size is larger than that of reproductive individuals . Such population is represented by a triangular-shaped age pyramid .
Whereas , the equal number of reproductive and pre-reproductive individuals represents a stable population and the age pyramid is bell-shaped
Less number of pre-reproductive individuals than reproductive individuals represents declining population and age pyramid appears urn-shaped . The similar case is seen when reprodutive individuals are less than the post - reproductive individuals .
Promotional Banner

Similar Questions

Explore conceptually related problems

A population is

Population is

Observe the following agewise population graph of a country in 2018 . The population in this country is

The best way to decrease population of a country is

Given below are hypothetical figures in regard to population (in crores) of two countries X and Y during the last three decades. From the above data complete the following sentences : (i) Rate of growth of population of country ............. has declined between years ............. and .............. (ii) the country ........... shows negative population growth between years .......... and ............ (iii) The country ............ shows positive population growth between years ......... and .......... .

Which of the following can be taken as the most convincing factor for indicating the rapid increases in population growth of a country?

Which of the following is most convincing reason for increasing population growth in a country?

There is a great concern all over the world to conserve biodiversity for maintaining ecological balance in nature. Explain giving three reasons. Write different ways that have helped in increasing tiger population in our country.

The graph shows the percenatge of population owining TV sets in various countries . Assuming that the population of all the countries is the same and remains constant for the given years, which fo the following opitons in INCORRECT ?