Which plant feature is used for storage of large amounts of food?

Roots are the plant feature primarily used for the storage of large amounts of food. They serve as a reservoir for nutrients and carbohydrates, allowing the plant to draw upon these stored reserves when needed, particularly during periods of growth or in times of stress.

Plants, especially perennials, often store energy in the form of starch or other carbohydrates within their roots. This storage capability is vital for the plant's survival, as it provides energy and nutrients for growth, especially during unfavorable conditions such as winter or drought.

While leaves, stems, and flowers play important roles in a plant's overall function—such as photosynthesis, structural support, and reproduction—they do not serve the primary purpose of food storage to the same extent as roots do. Therefore, the roots are recognized as the principal organs for food storage in plants.