In the spring, stored sugars in root or stem tissues may be transported to buds that require energy for growth. This directional movement of materials within the phloem allows plants to allocate resources according to their current metabolic demands, supporting ...

Increased osmotic pressure in the phloem tissue, resulting from the active transport of sucrose and other substances, causes water to move into the phloem from surrounding tissues. This increased pressure then drives the movement of material within the phloem to ...

ATP provides the energy necessary to actively transport materials like sucrose into the phloem tissue. This energy expenditure increases the osmotic pressure within the phloem, facilitating the movement of water into the tissue and aiding in the translocation process.

Translocation in the phloem involves active energy expenditure, primarily through the use of ATP, to move materials such as sucrose. In contrast, water transport in the xylem is largely driven by passive physical forces such as cohesion and tension.

Translocation in the phloem occurs in both upward and downward directions, allowing nutrients to be distributed throughout the plant as needed. This process is facilitated by the pressure gradient established between source and sink tissues, as well as by active ...