Question

Match the following.

Organism	r value
	A. 0.12
	B. 0.0205
	C. 0.015

• A. 1 - B, 2 - C and 3 - A
• B. 1 - C, 2 - A and 3 - B
• C. 1 - A, 2 - C and 3 - B
• D. 1 - A, 2 - B and 3 - C

Answer 1

The correct option is B 1 - C, 2 - A and 3 - B

Intrinsic rate of natural increase (r) or the Malthusian parameter is the difference between the number of births and the number of deaths per capita in a population. The higher the ‘r’ value, the faster the growth rate. It can be expressed as, r = (b-d)
where,
b is birth rate i.e the total number of live births in a population per year
d is death rate i.e the total number of deaths in a population per year

For the Norway rat, r is 0.015, for the flour beetle, r is 0.12 and for the human population in India in the year 1981, the r value is 0.0205.