Why grass is green?
Grass appears green because it reflects green light and absorbs all other colors of light. The chlorophyll in the grass absorbs light in the blue and red wavelengths, which is why grass looks green. The chlorophyll molecule is responsible for absorbing sunlight and using it to convert carbon dioxide and water into glucose (a type of sugar) through a process called photosynthesis. This process is what gives plants their green color and allows them to produce their own food.
Would it work the same if grass would be red?
If grass contained pigments that absorbed light in the green wavelengths and reflected light in the red wavelengths, it would appear red to our eyes. However, the chlorophyll in grass absorbs light in the blue and red wavelengths, which is why grass appears green. Different pigments absorb different wavelengths of light, which is why plants can have a wide range of colors. Some plants do contain pigments other than chlorophyll, such as carotenoids which can give plants a yellow, orange, or red color. These pigments are responsible for the autumn leaves of deciduous trees, which turn red and yellow before falling off the tree.
