AP BIOLOGY

Detailed explanation-1: -During photosynthesis, the main product is glucose, and it is rapidly accumulated in the leaves; it needs to be efficiently transported to different tissues. SWEETs facilitate the transport of sugar molecules from leaves to phloem.

Detailed explanation-2: -Water is transported in the plants with the help of conductive tissues and individual cells of the vascular system. Water moves along the water potential gradient and enters the root hairs and xylem through either apoplast or symplast pathways.

Detailed explanation-3: -Answer and Explanation: Glucose is primarily transported as the disaccharide sucrose in plants. Sucrose is one of the major molecules transported in the phloem tissue of plants. Sucrose is comprised of a glucose molecule and fructose molecule linked together by a glycosidic bond.

Detailed explanation-4: -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.