Q.Differentiate J and S shaped curve.

Step 1. The J-shaped growth form occurs when a population increases rapidly in an exponential fashion and then stops abruptly, due to environmental resistance or the sudden appearance of a limiting factor — many insect populations show this pattern, exploding in the rainy season and then disappearing at the season's end.

Step 2. The S-shaped (sigmoid) growth form occurs in populations, such as small mammals, that increase slowly at first, then more rapidly, and then gradually slow down as environmental resistance increases, until equilibrium is reached and maintained. …

Contrast the two curves on how growth terminates: abrupt halt (J) versus gradual levelling at carrying capacit …

• Describing both curves as simply 'rising and then flattening', missing that the J curve's stop is abrupt …