Question

The given figure represents different factors affecting population density $(N)$. If $B =$ natality, $D =$ mortality, $E =$ emigration and $I =$ immigration; then select the incorrect option regarding these.

• A. $B$ and $D$ are most influential factors under normal conditions while $I$ and $E$ become important in special conditions
• B. In a new habitat just being colonised, $I$ becomes more important than $B$
• C. $B$ and $I$ cause positive changes in $N$
• D. $I$ is generally equal to $E$

Answer 1

Answer: (D)

Immigration is not necessarily equal to emigration in a population.