Question

The sigmoid growth curve has four phases.Choose the correct sequence in which it occurs

• A. Acceleration- Deceleration-Lag phase Asymptote
• B. Asymtote-Acceleration – Deceleration – Lag phase
• C. Lag phase – Acceleration – Deceleration – Asymtote
• D. Acceleration – Lag phase – Deceleration – Asymtote

Answer 1

The correct option is C Lag phase – Acceleration – Deceleration – Asymtote

4 phases of growth curve

(i) Lag phase – Initial phase of slow growth.

(ii) Log phase – Number of individuals increases at an logarithmic rate.

(iii) Stationary – growth rate and death rate are equal.

(iv) Death phase – Death rate is higher than growth phase and the population curve drops.