This food-making process takes place in the leaf in numerous cells containing chlorophyll, which gives the leaf its green color. This extraordinary chemical absorbs from sunlight the energy that is ...
The numerous breeds of string beans contain various levels of chlorophyll, so they may be light to dark green in color. Wax beans, though, are pale to golden yellow because they don't contain ...
Photosynthesis -- mainly carried out by plants -- is based on a remarkably efficient energy conversion process. To generate chemical energy, sunlight must first be captured and transported further.
As the tree does this, the green chlorophyll is removed, which reveals hidden colours in the leaves. The first colours to appear are yellow, then they turn clear too, revealing the gorgeous red ...