Which branch studies relationships between microbes and domesticated plants and animals?

• A. Agricultural Microbiology
• B. Environmental Microbiology
• C. Industrial Microbiology
• D. Medical Microbiology

Answer: (A)

Agricultural microbiology studies how microorganisms interact with domesticated plants and animals to influence growth, health, and productivity. It covers symbiotic relationships like nitrogen-fixing bacteria in legume nodules and mycorrhizal fungi that boost nutrient uptake, as well as how microbes affect plant diseases and their management. It also looks at practical applications such as seed inoculants, biocontrol agents against plant pathogens, fermentation processes in animal feed, and the role of probiotics in livestock. This focus on crops and livestock and their associated microbes is what sets it apart from other branches: environmental microbiology centers on microbes in natural ecosystems, industrial microbiology on microbial production of products, and medical microbiology on human health and disease.