Detailed Explanation:

The stem of a plant serves multiple functions: it transports water and nutrients from roots to leaves, distributes food (prepared by leaves during photosynthesis) to all parts, and stores food in the form of starch in tissues like parenchyma (e.g., potato, ginger, sugarcane stems).

While stems contribute to plant shape and contain lenticels for respiration, and green stems assist in photosynthesis, the question explicitly asks what stem helps with beyond distribution—making food storage the primary additional function.

Therefore, storing food is the key function alongside distribution, making Option 1 the correct answer.