AP BIOLOGY

Detailed explanation-1: -Sinks include areas of active growth (apical and lateral meristems, developing leaves, flowers, seeds, and fruits) or areas of sugar storage (roots, tubers, and bulbs).

Detailed explanation-2: -Sources and Sinks The sugars produced in the sources, such as leaves, must be delivered to growing parts of the plant. These sugars are transported through the plant via the phloem in a process called translocation. The points of sugar delivery, such as roots, young shoots, and developing seeds, are called sinks.

Detailed explanation-3: -Translocation is the movement of organic compounds (e.g. sugars, amino acids) from sources to sinks. Organic molecules such as sucrose and amino acids move from a source to a sink via phloem tubes in plants.

Detailed explanation-4: -The photosynthetically active parts of the plants are referred to as the sources. The areas of active growth and the areas of storage are referred to as the sinks. The phloem elements are loaded at these sites. The phloem elements are unloaded at these sites.

Detailed explanation-5: -Translocation occurs in the phloem tissue, which consists of tube-like structures called phloem vessels. These phloem vessels run from the leaves into every other part of the plant and are responsible for transporting dissolved organic solutes, such as sucrose and amino acids, from the sources to the sinks.