Q. The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?
A) the food plants mature and die at the end of the rainy season
B) its population growth curve is of J-type
C) the population of its predators increases enormously
D) S-shaped or sigmoid growth of this insect
Explanation
[Solution from source] A population that grows explosively and then crashes suddenly, without levelling off at a carrying capacity, follows a J-shaped (exponential) growth curve. A sigmoid curve would slow down and plateau instead of disappearing. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.