Question

Which one or more of the following would make a plant community more susceptible to invasion by exotic plants?

• A. Anthropogenic influx of nutrients
• B. Decline in density of a dominant species due to disease
• C. Arrival of a highly competitive exotic species
• D. Absence of suitable pollinators for an invading species

Hint:

Effective management of ecosystems involves monitoring nutrient inputs and health of dominant species to prevent ecological imbalances that favor invasive species.

Answer 1

The Correct Option is A, B, C

Step 1: Evaluate Anthropogenic Influences.
An influx of nutrients can disrupt native plant communities, creating conditions favorable for invasive species that can exploit these resources more effectively than native species. 
Step 2: Consider the Impact of Disease on Dominant Species.
A decline in a dominant species due to disease can create gaps in the ecosystem, reducing competitive pressures and allowing invasive species to establish more easily. 
Step 3: Assess the Impact of Competitive Exotic Species.
The arrival of a highly competitive exotic species can directly challenge native species for resources, leading to changes in the community structure and potentially displacing native species.