Starch, a carbohydrate commonly found in foods like potatoes and rice, primarily serves what biological function within plants?
AProviding structural rigidity to plant cell walls
BTransporting water throughout the plant
CAbsorbing sunlight for photosynthesis
DServing as the plant's main form of stored energy
Explanation
Starch is a carbohydrate composed of many linked glucose units, and it primarily serves as the main form of stored energy within many plants, allowing them to keep reserves of readily accessible energy in parts like seeds, roots, and tubers, such as potatoes. When humans and other animals consume starchy foods, digestive enzymes break the starch back down into individual glucose units that the body can then absorb and use for energy. This role as an energy storage molecule is functionally distinct from cellulose, another important plant carbohydrate that instead primarily provides structural support within plant cell walls. Explore more Everyday Science MCQs on mcqstutor to keep practicing.

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