Question

Plaque is found on teeth because of:

• A. Action of fungi on fats in the mouth
• B. Action of bacteria on carbohydrates (sugars) in the mouth
• C. Action of bacteria on fats in the gums
• D. Action of fungi on carbohydrates in the gums

Answer 1

The correct option is B Action of bacteria on carbohydrates (sugars) in the mouth

Plaque is the yellow, sticky substance found on teeth due to poor oral hygiene. They are formed when bacteria present in the mouth acts on the carbohydrates (sugar) present in food, releasing acids. These acids destroy the teeth.