Disease resistance refers to the ability of an organism, such as a plant, animal, or human, to withstand or fight off infections caused by pathogens like bacteria, viruses, or fungi. This resistance can be innate, meaning it is present from birth, or acquired, developing over time through exposure to diseases or vaccinations. In agriculture, disease resistance is crucial for crop health and yield. Farmers often select or breed plants that show natural resistance to specific diseases, reducing the need for chemical treatments and promoting sustainable farming practices. This approach helps ensure food security and protects ecosystems.