Originally posted by: Iron Woode
Originally posted by: Mwilding
Green Chlorophyll is the predominant form seen in most plants. Some plants have more red or yellow chlorophyll - hence the color variations in leaves. Regardless of the color, all leaves have all (or most) types of chlorophyll in some proportion. In the fall, trees turn red, yellow and orange, because the green chlorophyll breaks down leaving the red and yellow kinds behind to color the leaves.
That is so wrong, its not funny.
First, leaves are green because chlorophyll reflects green light to your eyes. It absorbs the rest of the spectrum.
Second, fall colouring is because of the chemicals trees have ingested while growing. When the tree cuts off flow to the leaves, the clorophyll breaks down and disappears. The resulting minerals and other chemicals become dominant and hence colour changes.