In signoid growth curve, upper asymptote represents period of
A
Establishment
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B
Negative acceleration
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C
Positive acceleration
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D
Equilibrium
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Solution
The correct option is C Equilibrium In a sigmoid growth curve, there are three phases, lag phase, exponential phase and steady state phase. The upper limit of the curve is called as upper asymptote. It represents the period of equilibrium. At this stage, birth rate and death rate are at balance. It is said to be at equilibrium because at this stage, there is equilibrium between biotic potential and environmental resistance.