Leafminer activity on leaves is best described as what?

Leafminer activity on leaves is best described as what?

• A. Winding tunnels inside leaves
• B. Surface ring spots on upper leaf
• C. Chlorosis on mature leaves
• D. Root feeding

Answer: (A)

Leafminers are insect larvae that feed inside the leaf tissue, between the upper and lower surfaces. As they eat, they create long, winding tunnels or mines within the leaf, which is the hallmark of leafminer activity. That internal, serpentine mining pattern best describes what you’d observe on infested leaves. The other options describe surface damage, general yellowing, or feeding on roots, none of which capture the characteristic internal mining of leafminers.

Leafminers are insect larvae that feed inside the leaf tissue, between the upper and lower surfaces. As they eat, they create long, winding tunnels or mines within the leaf, which is the hallmark of leafminer activity. That internal, serpentine mining pattern best describes what you’d observe on infested leaves. The other options describe surface damage, general yellowing, or feeding on roots, none of which capture the characteristic internal mining of leafminers.