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Q. Given population growth curve represents the logistic growth curve. In this curve, find out what do $A$, $B$ and $C $indicate.Biology Question Image

Organisms and Populations

Solution:

• '$A$' represents stationary phase which is the third phase in which the population reach at the carrying capacity level and population get stationary position. No. of birth = No. of death.
• ' $B$ ' represents log phase which is the second phase in which a population use its resources maximally and increases their number exponentially.
Number of birth $\gg$ Number of death
• ' $C$ ' represents lag phase which is the initial phase in which a population adapt themself according to the environment and starts to increase their number.