The movement of materials from leaves to other tissues throughout the plant is called?

• A. Photosynthesis
• B. Translocation
• C. Respiration
• D. Transpiration

Answer: (B)

Translocation is the movement of organic substances, mainly sugars produced in the leaves, through the phloem to other parts of the plant. Leaves act as sources, making sugar via photosynthesis, and the phloem carries this sap to sinks such as roots, developing fruits, and growing tissues where it’s used or stored. This process is driven by pressure differences in the phloem (the pressure-flow mechanism), distinguishing it from the movement of water in the xylem. Photosynthesis is the sugar-making step, transpiration is water loss that helps pull water up the plant, and respiration is how cells burn sugars for energy.