Question

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

• A. A-Lag phase, B-Log phase, C-Stationary phase
• B. A-Log phase, B-Lag phase, C-Stationary phase
• C. A-Stationary phase, B-Log phase, C-Lag phase
• D. A-Stationary phase, B-Lag phase, C-Log phase

Answer 1

Answer: (C)

• '$A$' 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.