Question

The density of a population in a given habitat during a given period, fluctuates due to changes in four basic processes. On this basis choose the correct option to fill up A and B boxes in the given diagram

• A. A = Natality + Immigration, B = Mortality + Emigration
• B. A = Natality + Mortality, B = Immigration + Emigration
• C. A = Birth rate + Death rate, B = Mortality + Emigration
• D. A = Natality + Emigration, B = Mortality + Immigration

Answer 1

Answer: (A)

Population density due to changes in the following basic process - A: Natality + Immigration; B: Mortality + Emigration
Natality is the proportion of births to the total population in a place in a given time. Immigration is the number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration. Mortality is the number of deaths in the population during a given period of time. Emigration is the number of individuals of the population who left the habitat and have gone elsewhere during a given period of time.