Consider a population of 10 million cells. Given the per-capita birth rate of 0.002 (per unit time) and the per-capita death rate of 0.002 (per unit time), the expected number of cells after 10 generations is ______.

A 1 million

B 5 million

C 10 million

D 100 million

The answer is C.

Solution

Reference: NCERT Class XII, page 193. r = b - d = 0.002 - 0.002 = 0. $N_t=N_0e^{rt}=N_0e^{0\times10}=N_0=10$ million.

Concept Population growth - intrinsic rate

90 questions from this chapter have appeared across 25 exam years.