Galls are abnormal lumps that appear on which parts of a plant?

• A. Leaves, stems, branches
• B. Roots
• C. Flowers
• D. Abnormal lumps that appear on leaves, stems, branches

Answer: (D)

Galls are abnormal growths that form on plant tissue in response to attacks by insects, mites, fungi, bacteria, or nematodes. These growths most often appear on above-ground parts—leaves and stems, including twigs and branches. The option that describes abnormal lumps on leaves, stems, and branches directly names the typical sites and the unusual growth, making it the best fit for what galls are and where they commonly appear. Roots are a less common site, and flowers are not the usual location, so those choices don’t capture the common pattern as clearly.