AP BIOLOGY

Detailed explanation-1: -The phloem is the means by which the products of photosynthesis are transported to non-photosynthetic parts of the plant, such as the roots, and to developing leaves, nectaries, fruits and seeds (Baker and Milburn, 1989).

Detailed explanation-2: -Kallarackal and Komor (1989) demonstrated that glucose and fructose are transported in the phloem of Ricinus communis if the cotyledons are incubated in these sugars.

Detailed explanation-3: -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.

Detailed explanation-4: -Phloem moves sugar that the plant has produced by photosynthesis to where it is needed for processes such as: growing parts of the plant for immediate use. storage organs such as bulbs and tubers.