Answer: Age pyramid.
- A Growth curve
- B Age pyramid
- C Survivorship curve
- D Carrying capacity curve
Correct answer: B. Age pyramid
Explanation: An age pyramid (age distribution) is a plot of the proportion of individuals of different age groups, showing the age structure of a population.
Exponential growth produces an ever-steepening J-curve with no limit, an unrealistic long-term model; logistic growth produces an S-curve that levels off at the carrying capacity K, as growth rate (K−N)/K shrinks to zero once resources are fully used.
Concept context
How organisms interact with abiotic factors and respond to stress, plus population attributes, growth models, and interspecific interactions such as predation, competition, and mutualism.