Question

(c) biological indicator: 5. describe aspects of each of the following for the microfungi (kingdom fungi): (a) environmental range: (b) ecological role:

Explanation:

• (a) Environmental range: Microfungi (e.g., molds, yeasts) are highly adaptable. They can thrive in diverse environments such as soil (where they decompose organic matter), on plants (some are plant - pathogens while others form mutualistic associations like mycorrhizae), in water (both freshwater and marine, though less common than in terrestrial habitats), and in human - made environments (like damp buildings where they can cause mold growth).
• (b) Ecological role: As decomposers, microfungi break down complex organic compounds (such as cellulose and lignin in dead plant material) into simpler substances, recycling nutrients back into the ecosystem. They also play roles as symbionts. For example, mycorrhizal fungi form associations with plant roots, helping plants absorb nutrients (like phosphorus) from the soil in exchange for carbohydrates from the plant. Some microfungi are also pathogens, causing diseases in plants (e.g., powdery mildews on various crops) and animals (including humans, such as yeast infections).

Answer:

• (a) Environmental range: Thrive in soil, on plants (pathogenic or mutualistic), in water (less common), and in human - made environments.
• (b) Ecological role: Decomposers (recycle nutrients), symbionts (e.g., mycorrhizae), and pathogens (cause diseases in plants and animals).