Answer: Mutualism.
- A Parasitism
- B Commensalism
- C Mutualism
- D Amensalism
Correct answer: C. Mutualism
Explanation: Mutualism is an interspecific interaction where both participating species derive benefit, such as lichens (fungus and algae).
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.