Q.

Which statement is related to S-shaped population curve?

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a

Environmental resistance suddenly become ineffective

b

Exponential phase is followed by decline phase

c

Mass mortality and population crash occurs

d

Resources available to such a population is unlimited

answer is B.

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Detailed Solution

A population growing in a habitat with limited resources exhibits logistic growth curve (S-shaped). Exponential (acceleration) is followed by deceleration phase in it.

Population which exhibits J-shaped growth curve has following features;

  • unlimited resources
  • high mortality and population crash 
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