Which tissue translocates sugars produced by photosynthesis to other parts of the plant?

Which tissue translocates sugars produced by photosynthesis to other parts of the plant?

• A. Phloem
• B. Xylem
• C. Cortex
• D. Epidermis

Answer: (A)

Translocation of sugars produced by photosynthesis is carried out by phloem. This tissue forms the long-distance highway for organic nutrients, especially sucrose, moving from source tissues (like mature leaves where sugars are produced or stored) to sink tissues (such as roots, developing shoots, flowers, or fruits) where they are used or stored. The phloem transports sap through a process driven by pressure differences. The sugars are actively loaded into the phloem at the source, water follows by osmosis, and the resulting high turgor pressure pushes the sap through sieve-tube elements toward sinks. At the sink, sugars are unloaded and used or stored, and the pressure drops, continuing the cycle. Xylem, in contrast, moves water and dissolved minerals from roots upward to the rest of the plant. Cortex is a ground tissue outside the vascular bundles involved in storage and other functions, not the primary transport system, and epidermis is the outer protective layer.

Translocation of sugars produced by photosynthesis is carried out by phloem. This tissue forms the long-distance highway for organic nutrients, especially sucrose, moving from source tissues (like mature leaves where sugars are produced or stored) to sink tissues (such as roots, developing shoots, flowers, or fruits) where they are used or stored.

The phloem transports sap through a process driven by pressure differences. The sugars are actively loaded into the phloem at the source, water follows by osmosis, and the resulting high turgor pressure pushes the sap through sieve-tube elements toward sinks. At the sink, sugars are unloaded and used or stored, and the pressure drops, continuing the cycle.

Xylem, in contrast, moves water and dissolved minerals from roots upward to the rest of the plant. Cortex is a ground tissue outside the vascular bundles involved in storage and other functions, not the primary transport system, and epidermis is the outer protective layer.