Which of the following is an example of a Biotic (Living) Casual Agent?

Fungi, as a biotic causal agent, are living organisms that can have significant impacts on plants and ecosystems. They play various roles, including being pathogens that can cause diseases in plants, which can lead to symptoms such as wilting, discoloration, or even plant death. Additionally, fungi are essential for nutrient cycling in ecosystems, particularly through their symbiotic relationships with plants (e.g., mycorrhizae). This living nature of fungi distinguishes them from other factors like minerals, sunlight, or water, which are non-living components and do not exhibit biological processes. Understanding the role of such agents is crucial for effective pest management and promoting plant health.