Why is the grass green?

Answer 1

Sunlight gives off UV rays, which plants absorb to turn into energy. This energy is called ATP. In order for photosynthesis to occur, ATP must be present. Because light comprises of all the colors of the Visible Light Spectrum, or Rainbow, all colors EXCEPT green are absorbed into the chlorophyll. Green is the color reflected and transmitted back, and that is why we see green in plants. (There's a whole lot more, but that's the basics).

Answer 2

Grass is green because of a natural pigment called chlorophyll, which plays a key role in photosynthesis—the process plants use to convert sunlight into energy. Here’s the science in simple terms:

Chlorophyll’s Color Magic – Chlorophyll absorbs blue and red light from the sun for photosynthesis but reflects green light, which is why our eyes see grass as green.

Evolution’s Choice – Sunlight’s peak energy is in the blue and red wavelengths, so plants evolved to use those colors most efficiently. Green became the "leftover" shade we see.

What If Grass Were Another Color? – On Earth, most plants use chlorophyll, but some algae (like purple sulfur bacteria) use different pigments. Hypothetically, if a planet had a dimmer star, plants might evolve to appear black to absorb all light!

Fun Fact: In autumn, grass may turn yellow/brown because chlorophyll breaks down, revealing other pigments like carotenoids (also found in carrots).

Answer 3

due to photosynthesis and the chlorophyll in grass. this is the same for other green plants