Identify the correct statement related to concepts and ideas in ecology:

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Question: Identify the correct statement related to concepts and ideas in ecology.
Option A: 'A population is defined as a group of communities that interact in a delimited area.' This is incorrect. A population refers to all individuals of a single species living in a particular area, not a group of different communities interacting. The description confuses population with a community, which is an assemblage of many species in a given area.
Option B: 'The competitive exclusion principle occurs when multiple species with similar requirements adapt to coexist in the same ecosystem.' This is misleading. The competitive exclusion principle states that two species competing for the same limiting resource cannot stably coexist in the same environment; one will outcompete the other. The statement suggests coexistence, which contradicts the principle.
Option C: 'Purple loosestrife is a clear example of an invasive species reducing natural biodiversity.' This is accurate. Purple loosestrife is a well-known invasive plant in many regions, and its aggressive growth often outcompetes native species, leading to reduced biodiversity and altered ecosystem structure.
Option D: 'Biological interactions are dynamic and complex, with two species possibly capable of having both negative and positive interactions at the same time.' This statement attempts to capture the complexity of species interactions, but the phrasing can be misleading. In ecology, the nature of an interaction (e.g., mutualistic vs. antagonistic) can vary with context, environment, or life stage, but saying two species are capable of both negative and positive interactions 'at the same time' in the same context is ambiguous. At any given moment, the interaction is typically categorized as one type, though it can shift over time or conditions. Therefore this option is problematic as stated, even though conceptually interactions can be context-dependent and multi-faceted.
Overall, option C presents a clear, correct ecological concept with well-established real-world example, while options A and B misrepresent core definitions, and option D, though touching on legitimate complexity, is phrased in a way that can be misleading about simultaneous interaction types in the same context.

FRST_V 100 101 2025W1 FINAL EXAM

Identify the correct statement related to concepts and ideas in ecology:

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