Question

Which of the following correctly tells about population density at time t+1?

(a) Nt + 1 = Nt + [(B + I) – (I + E)]

(b) Nt + 1 = Nt + [(B + I) – (D + E)]

(c) Nt + 1 = Nt + [(B + D) – (B + E)]

(d) Nt + 1 = -Nt + [(B + I) – (D + E)]

This question was posed to me in my homework.

The above asked question is from Population Growth topic in division Organisms and Populations of Biology – Class 12

Answer 1

Correct option is (b) Nt + 1 = Nt + [(B + I) – (D + E)]

Explanation: The population density at time t+1 is given as Nt + 1 = Nt + [(B + I) – (D + E)]. Here Nt is population at time t, B is natality, I is immigration, D is mortality while E is emigration.