An abnormal condition, used to identify a plant health problem, is called a ...

An abnormal condition, used to identify a plant health problem, is called a ...

• A. Symptom
• B. Sign
• C. Syndrome
• D. Lesion

Answer: (A)

The main idea here is that a plant’s outward changes are used to identify health problems. An abnormal condition you can observe on the plant—such as yellowing leaves, wilting, or spots—fits that description and is called a symptom. These visible changes signal that something is wrong, whether it’s disease, stress, or nutrient issues. A sign, by contrast, is evidence of the pathogen itself, like fungal structures or ooze, rather than the plant’s response. A lesion is a specific damaged area on plant tissue, a type of symptom but not the general term for the abnormal condition used to identify a problem. A syndrome is a set of signs and symptoms that occur together, pointing to a broader disease pattern rather than a single abnormal condition.

The main idea here is that a plant’s outward changes are used to identify health problems. An abnormal condition you can observe on the plant—such as yellowing leaves, wilting, or spots—fits that description and is called a symptom. These visible changes signal that something is wrong, whether it’s disease, stress, or nutrient issues.

A sign, by contrast, is evidence of the pathogen itself, like fungal structures or ooze, rather than the plant’s response. A lesion is a specific damaged area on plant tissue, a type of symptom but not the general term for the abnormal condition used to identify a problem. A syndrome is a set of signs and symptoms that occur together, pointing to a broader disease pattern rather than a single abnormal condition.