Why are plants green?

by Jesenia Mejia

When I walked around the Botanic Garden I saw everything green, everything was beautiful, there were different type of plants.

Chlorophyll is a green pigment in all green plants. It’s responsible for absorbing light to provide energy for photosynthesis. It’s formula is C55 H72 O5 N4 Mg . The light is on a spectrum . Chlorophyll starts to absorb light at a wavelength of 670 nanometers. Nanometers is one billionth of a meter. Plants are green because it absorbs other colors of light, like red and blue, the green light is reflected out because the pigment does not absorbs it. Chlorophyll absorbs light in red which is the long wavelength, and blue which is the short wavelength. Green is not absorbed but it is reflected.


Cause: Chlorophyll absorbs some light energy

Effect: Plants get energy/ sunlight in able to survive.


Chlorophyll looks green is our eyes, but it’s not important that it’s green. It’s important for plants because plants make food in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight.