ï»¿ 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 themInterpretations from Biology Organisms and Populations Class 12 Nagaland Board

### Chapter Chosen

Organisms and Populations

### Book Store

Currently only available for.
CBSE Gujarat Board Haryana Board

### Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

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

Interpretations

• 'A' is more recent and shows slight reduction in the growth rate

• 'B' is earlier pyramid and shows stabilised

• 'B' is more recent showing that population is very young

• 'A' is the earlier pyramid and no change has occurred in the growth rate

A.

'A' is more recent and shows slight reduction in the growth rate

Interpretation 'A' is correct for the given figures.

Interpretation 'A' is correct for the given figures.

383 Views

The number of births during a given period in the
population that are added to the initial density is

:
• Natality
• Mortality
• Migration
• Immigration

A.

Natality
587 Views

To live in groups is beneficial because :
• feeling of security
• can obtain food easily
• Partner is available for mating
• All the above

D.

All the above
878 Views

Population density is denoted by the symbol
• N
• D
• M
• D

A.

N
738 Views

Ants give information to their companions :
• by dancing
• by secretion of pheromones
• by making sound
• by defecating

B.

by secretion of pheromones
697 Views

The departure of a individual from a population is called :
• Natality
• Mortality
• Immigration
• Emigration

D.

Emigration
574 Views