Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Powdery Mildew resistance'?

A. Plant resistance to Cercospora leaf spot (CLS) caused by the agent Cercospora canescens.
B. Resistance to storage insect pest Callosobruchus chinensis (bruchid).
C. Plant resistance to powdery mildew caused by the agent Erysiphe polygoni.
D. Resistance to pod borers.

Answer: Plant resistance to powdery mildew caused by the agent Erysiphe polygoni.