AP BIOLOGY

Detailed explanation-1: -Organic molecules such as sucrose and amino acids move from a source to a sink via phloem tubes in plants. The phloem is composed of living tissue called sieve tube members (lack a nucleus) that are joined end to end to form a tube that conducts food materials throughout the plant.

Detailed explanation-2: -Phloem transports sucrose and amino acids up and down to the plant.

Detailed explanation-3: -Food is synthesized in the green parts of a plant. The non-green parts are depended on the photosynthetic cells for nourishment. The food in the form of sucrose is transported by the vascular tissue phloem.

Detailed explanation-4: -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.

Detailed explanation-5: -Amino acids are transported between different organs through both xylem and phloem.