AP BIOLOGY

Detailed explanation-1: -Plants store their excess glucose in the form of starch. Glucose is stored in the form of glycogen in humans and animals.

Detailed explanation-2: -Starch is the stored form of sugars in plants and is made up of a mixture of two polysaccharides, amylose and amylopectin (both polymers of glucose).

Detailed explanation-3: -In plants, sucrose is transported from synthesising (source) organs to sink organs where it is stored (as sucrose or, e.g., as starch) or metabolised. Sucrose is therefore a source of carbon skeletons but also an energy vector.

Detailed explanation-4: -Many plants store their sugar in the form of starch, like potatoes. Others store sugar in the form of fructose or glucose in their fruits, like apples and oranges. Some plants store high concentrations of sucrose.

Detailed explanation-5: -In plants, sucrose is the major transport form for photoassimilated carbon and is both a source of carbon skeletons and energy for plant organs unable to perform photosynthesis (sink organs). As a molecule translocated over distance, sucrose has to pass through a number of membranes.