Which part of the tree provides main structural support and transports water up from the roots?

• A. Trunk
• B. Roots
• C. Leaves
• D. Crown

Answer: (A)

The trunk is the tree’s main vertical support and the central conduit for upward water transport. Its thick, lignified wood provides the structural backbone that keeps the tree upright against wind and weight. Water and minerals move from the roots into the trunk through the xylem, traveling upward to the branches and leaves where they are used and lost via transpiration. Roots mainly anchor and absorb water, while the crown and leaves are the sites of photosynthesis and transpiration, not the primary pathways for structural support or upward transport.