Carbohydrates are stored as polysaccharides for energy. In plants, they are stored as starch, a polysaccharide made of glucose, found in roots, seeds, and chloroplasts. In animals, carbohydrates are stored as glycogen, also a glucose polysaccharide, mainly in the liver and muscles. Thus, the correct pairing is starch for plants and glycogen for animals, which matches option 4.
Thus, the correct answer is Starch, Glycogen.