NEET Solved Paper 2016 Question 65

Question: When does the growth rate of a population following the logistic model equal zero? The logistic model is given as $ dN/dt=rN(1-N/K) $ :

Options:

A) When $ N/K $ is exactly one

B) When $ N $ nears the carrying capacity of the habitat

C) When $ N/K $ equals zero

D) When death rate is greater than birth rate

Show Answer

Answer:

Correct Answer: A

Solution:

  • $ \frac{dN}{dt}=rN( 1-\frac{N}{K} ) $ $ \frac{dN}{dt}=rN(1-1)=0 $