GCEBiologyGrowth and Development2024

Which of the following correctly describes the sigmoid growth curve of a population?

AGrowth rate remains constant throughout the entire period
BGrowth is initially slow, accelerates, then levels off as carrying capacity is reachedCORRECT
CGrowth accelerates continuously without any limit
DGrowth is rapid at first, then slows immediately to zero
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Why the answer is B, and why the others tempt you.
The sigmoid (S-shaped) growth curve shows three phases: a slow lag phase, a rapid exponential phase, and a stationary phase where growth levels off as the population approaches the carrying capacity of the environment. This pattern results from increasing environmental resistance as population density rises. Options A, C, and D do not accurately describe this well-established growth pattern.
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