Which of the following characteristics would classify an introduced species as being invasive?

• A. It only survives in highly controlled laboratory conditions.
• B. It rapidly spreads and outcompetes native species for resources.
• C. It fails to establish a population in the new environment.
• D. It provides essential nutrients to native species without affecting their populations.

Answer: (B)

Verified step by step guidance

1. Understand the definition of an invasive species: An invasive species is one that is introduced to a new environment, establishes itself, and causes harm by outcompeting native species for resources, disrupting ecosystems, or negatively impacting biodiversity.
2. Analyze the first option: 'It only survives in highly controlled laboratory conditions.' This does not align with the definition of an invasive species because invasive species thrive in natural environments, not just controlled conditions.
3. Analyze the second option: 'It rapidly spreads and outcompetes native species for resources.' This matches the definition of an invasive species, as it describes the ability to spread quickly and dominate resources, harming native populations.
4. Analyze the third option: 'It fails to establish a population in the new environment.' This does not fit the definition of an invasive species because invasive species must establish a population to cause ecological harm.
5. Analyze the fourth option: 'It provides essential nutrients to native species without affecting their populations.' This describes a beneficial interaction rather than the harmful impact characteristic of invasive species.