DENDROLOGY

Detailed explanation-1: -Sugars produced in sources, such as leaves, need to be delivered to growing parts of the plant via the phloem in a process called translocation, or movement of sugar. The points of sugar delivery, such as roots, young shoots, and developing seeds, are called sinks.

Detailed explanation-2: -The sugars, synthesised in leaves (as a result of photosynthesis) are translocated downwards, upwards and laterally to all the other organs including storage organs mainly through phloem. These sugars are translocated in the form of sucrose.

Detailed explanation-3: -The photosynthesis-produced sugars are transported vertically, horizontally, and laterally to all other organs, mostly through the phloem, in the form of sucrose.

Detailed explanation-4: -Water and sugars are transported by xylem vessels and phloem tubes, respectively. Since these two conduits are hydraulically connected, it can be expected that both transport processes are physiologically coupled.