Question

Total number of individuals of a species per unit area and per unit time is called

• A. Population size
• B. Population density
• C. Demography
• D. Population dynamics

Answer 1

The correct option is B Population density

Population density is the number of individuals present per unit area or volume at a given time. If the total number of individuals is represented by letter N and the number of units of space (area for land organisms and volume for water organisms) by letter S, then the population density D can be represented as D =N/S. For instance, number of animals per square kilometer, number of trees per acre in a forest, etc. So, the correct answer is 'Population density'.