Answer: Competition for space can determine the distribution of competing species in nature.
- A Predation alone, rather than competition, determines barnacle distribution patterns
- B Competition for space can determine the distribution of competing species in nature
- C Both barnacle species coexist with equal abundance across every tidal zone
- D A mutually beneficial relationship exists between the two barnacle species
Correct answer: B. Competition for space can determine the distribution of competing species in nature
Explanation: Connell's experiments showed that Balanus outcompeted Chthamalus for space in the lower intertidal zones, providing field evidence that competition shapes species distribution.
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.