Question

why are plants green?

Answer 1

plants are green due to chlrorphyll, a substance that provides the green color. To maintain their green color plants need adequate food, light, and water

Answer 2

Plants appear green because their cells contain chloroplasts, which contains chlorophyll ,then gives plants green pigment...in order to survive. Chlorophyll reflects green and yellow while it absorbs other lights for energy (red, orange, blue, and violet).

Answer 3

Chlorophyll, (photosystem II and photosystem I), are based on the element Magnesium, and the structure is analogous to hemoglobin in animals which is based on iron. Iron compounds don't absorb red light, so you see red. Magnesium based compounds don't absorb the middle spectrum of visible light, so you see green. reds which are longer wavelength and blues which are shorter wavelength are absorbed in plants for energy to drive metabolic processes, and that energy turns water and carbon dioxide into carbohydrates. So plants physically have no choice but to be green, it was not a selection of evolution. Cloroplasts are endosymbiotic structures, they have two membranes and their own prokaryotic DNA...they closely resemble cyanobacteria that did develop upward of 2 billion years before plants in a high carbon dioxide atmosphere. That suggests that as carbon dioxide levels fell that the structure of a plant was more successful for this phototrophic organism to hide from the oxygen. So, that's where the chlorophyll came from in plants, and how come plants are green.

Answer 4

sorry for the long term part on it lol