Which tree structure is primarily involved in nutrient storage?

The structure primarily involved in nutrient storage is the roots. Roots serve a vital role not only in anchoring the tree and absorbing water and nutrients from the soil but also in storing carbohydrates and other essential nutrients. These stored nutrients are crucial for the tree’s growth and can be utilized during periods when the tree is not actively growing, such as in winter or during drought conditions.

Roots often contain starches derived from photosynthesis that occur primarily in the leaves. This stored energy is essential for processes like new growth in the spring, flower production, and overall health. While other structures such as leaves, branches, and bark play important roles in the tree's life—such as photosynthesis, structural support, and protection—they are not primarily focused on nutrient storage. Leaves are essential for photosynthesis, branches provide structure and support for foliage, and bark protects the inner tree layers but does not contribute significantly to nutrient storage compared to roots.