Question

The 10 individuals are born per year in a population, and the mid-year population is 5000. What is the birth rate of that area?

(a) 20

(b) 1.6

(c) 4

(d) 2

This question was posed to me during an online interview.

This key question is from Population Growth in portion Organisms and Populations of Biology – Class 12

Answer 1

Correct option is (d) 2

Easiest explanation: As per the formula, Natality = \(\frac{Number \, of \, deaths \, per \, year}{Mid-year \, population}\) x 1000 = \(\frac{10}{5000}\)  1000 = 2

                            The birth rate of the given area is 2 per year.