AP BIOLOGY

Detailed explanation-1: -Yellow and Orange Colors are Revealed When the Chlorophyll Degrades. As I have noted in several previous essays, the yellow and orange colors in leaves are revealed when chlorophyll, the pigment responsible for making leaves appear green, is lost from the leaf.

Detailed explanation-2: -Chlorophyll Breaks Down But in the fall, because of changes in the length of daylight and changes in temperature, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible and give the leaves part of their fall splendor.

Detailed explanation-3: -Plant pigments that are responsible for their yellow, bright red, and orange color are carotenoids that play a key role in plant health. Therefore, consumption of foods that have carotenoids provide various health benefits to the human body.

Detailed explanation-4: -Yellow, orange, and red colours usually come from a group of pigments called carotenoids. A common carotenoid, beta-carotene, is produced in the chromoplasts of sunflower petals. This produces the bright yellow and orange colours we see in these flowers.

Detailed explanation-5: -The three types of pigments that give fruits and vegetables their colors are carotenoids, flavonoids, and chlorophyll. Carotenoids – this pigment causes orange, red, and yellow colors.