A foliar disease would appear on which part of the plant?

A foliar disease would appear on which part of the plant?

• A. Leaves
• B. Roots
• C. Flowers
• D. Stems

Answer: (A)

Foliar means related to the leaves, the plant’s surface where photosynthesis happens and which are most exposed to the air and to pathogens. A foliar disease would show symptoms on the leaves, such as spots, powdery coatings, or lesions, because that’s where the disease primarily attacks. The roots are underground and deal with root diseases; stems and flowers can be affected by other disease types, but not typically described as foliar. So leaves are the part that would display a foliar disease.

Foliar means related to the leaves, the plant’s surface where photosynthesis happens and which are most exposed to the air and to pathogens. A foliar disease would show symptoms on the leaves, such as spots, powdery coatings, or lesions, because that’s where the disease primarily attacks. The roots are underground and deal with root diseases; stems and flowers can be affected by other disease types, but not typically described as foliar. So leaves are the part that would display a foliar disease.