Question

Choose the correct sequence of stages of growth curve for bacteria

• A. Lag, log, stationary, decline phase
• B. log, lag, stationary phase
• C. Stationary, lag, log decline phase
• D. Decline, lag, log phase

Answer 1

The correct option is A Lag, log, stationary, decline phase

• There are four phases during bacterial growth culture that are:- i) lag phase ii) log phase iii) stationary phase iv) decline phase/death phase.
• In the first lag phase, bacteria adjust themselves according to the environment.
• In the second log-phase bacteria actively starts dividing at a high rate.
• The stationary phase is the stage when growth ceases, but cells remain metabolically active.
• At the death phase (decline phase), bacteria start to die due to lack of nutrients.

So the correct answer is option A.