Answer: Homeotherms (regulators).
- A Conformers, whose body temperature varies with surroundings
- B Poikilotherms, animals with variable body temperature
- C Homeotherms (regulators)
- D Ectotherms, relying on external heat sources
Correct answer: C. Homeotherms (regulators)
Explanation: Mammals and birds are homeotherms (regulators) that maintain a relatively constant internal body temperature through physiological mechanisms.
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.