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Draw a sigmoid growth curve and explain its different phases/stages

Draw a sigmoid growth curve and explain its different phases/stages

Answers

A-Lag phase
- Slow growth rate at first
Organism adapting to the environment
B-Exponential phase
- Organisms already adapted
- First growth due to birth rate that is higher than death rate
C- Stationery phase (plateau)
- Birth rate equals death rate (equilibrium)
Lack of nutrients, accumulation of toxic waste products
D-Phase of decline
- Due to depletion of nutrients, accumulation of toxic wastes, lack of space
- Some individuals old hence not reproducing
- Death rate higher than birth rate

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ericmunguti answered the question on October 8, 2018 at 04:38

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