Oozing and necrosis in plants are typically considered symptoms rather than signs.
-
Symptoms are the visible effects of a disease or condition as they appear on the plant, which are experienced by the plant itself. Symptoms like oozing (often due to bacterial infections) and necrosis (the death of plant tissue) indicate something is wrong with the plant.
-
Signs, on the other hand, refer to the actual presence of a pathogen or disease agent that can be observed, such as fungal spores, bacteria, or lesions.
In summary, oozing and necrosis indicate that the plant is experiencing a problem and would be classified as symptoms.