If a plant can exclude or overcome a disease, it is considered ________.

A plant that can exclude or overcome a disease is considered resistant. Resistance in plants refers to their ability to prevent the infection or inhibit the growth and reproduction of pathogens. This can occur through various mechanisms, such as physical barriers, production of chemical compounds that deter pathogens, or the activation of defense responses upon pathogen recognition.

Understanding plant resistance is crucial in crop management and breeding programs, as resistant varieties can significantly reduce the reliance on chemical control methods, thereby promoting sustainable agricultural practices. By selecting and promoting resistant plant varieties, farmers can improve crop yield and health in the face of disease pressures. In contrast, the other options describe conditions where plants are more likely to be negatively affected by diseases, lacking the traits that allow them to resist pathogens effectively.