What is a potential benefit of plant diversity in an ecosystem?

• A. Enhanced soil erosion
• B. Increased competition among species
• C. Greater resilience to environmental changes
• D. Uniformity in species abundance

Answer: (C)

Plant diversity in an ecosystem contributes significantly to greater resilience to environmental changes. This resilience is primarily due to the variety of plant species that can fulfill different ecological roles, respond differently to varying conditions, and provide a range of functions, such as nutrient cycling, soil stabilization, and habitat provision.

With a diverse plant community, the ecosystem is better equipped to handle stresses such as drought, disease, or pest outbreaks. If one species is vulnerable to a particular threat, other species may withstand it, ensuring that the ecosystem continues to function effectively. Additionally, a diverse range of plants can improve the overall health of the environment, supporting a wider variety of animal species and maintaining ecological balance.

In contrast, the other options do not accurately reflect the benefits of plant diversity. Enhanced soil erosion is generally a negative consequence rather than a benefit, and increased competition among species can lead to the decline of less competitive species, which could reduce overall diversity. Uniformity in species abundance would likely result in a less resilient system, as it implies that the ecosystem has fewer varied responses to environmental stressors. Thus, increased plant diversity is key in enhancing an ecosystem's adaptability and sustainability.