Which term describes a fungus that forms visible growth on organic matter?

• A. Mold
• B. Bacteria
• C. Yeast
• D. Algae

Answer: (A)

Visible, fuzzy growth on organic matter is characteristic of molds, the filamentous forms of fungi. Molds grow as networks of hyphae that spread across surfaces, forming a visible colony as they expand and produce spores. Yeasts, in contrast, are usually unicellular and form smooth, creamy colonies rather than the spreading, fuzzy appearance typical of mold. Bacteria are not fungi and don’t create mold-like growth patterns. Algae are photosynthetic organisms and also not fungi. So the term that best describes a fungus that forms visible growth on organic matter is mold.