2006-06-11 23:27:21 · 6 answers · asked by Anonymous in Education & Reference ➔ Higher Education (University +)
Molecules in plants consist mostly of a backbone of carbon atoms, generally also bonded to oxygen and hydrogen atoms (and, to a lesser degree, to atoms of nitrogen and other elements). Most of these molecules are not colored. For example, sugars and starches contain only carbon, hydrogen and oxygen and they are not colored. But some molecules are colored, such as chlorophyll which is green and responsible for the green color of foliage and leaves. The green color of chlorophyll is critical to our life on earth. Chlorophyll facilitates photosynthesis, converting carbon dioxide in the atmosphere to the oxygen we breathe. Chlorophyll appears green because it absorbs red light from sunlight and it is this absorbed energy which drives photosynthesis. So color in plants is more than decorative: it is essential to life.
2006-06-11 23:31:58 · answer #1 · answered by sree 2 · 0⤊ 0⤋
The green parts of a plant gets its color from a compound called chlorophyll which uses the sunlight to change carbon dioxide and water into starch(food) and oxygen. This is why we need to plant trees and preserve our forests.
In most plants, the chlorophyll is in the leaves but in some "leafless" plants like the cactus, it is in the stem, trunk or branch.
Next time you see a tree full of green leaves, say thanks for its life sustaining oxygen.
2006-06-12 07:03:46 · answer #2 · answered by springday 4 · 0⤊ 0⤋
The plants are green due to the chlorophyl in the plants. Chlorophyl is what makes photosynthesis possible inside the plants.
2006-06-12 06:32:09 · answer #3 · answered by devilishblueyes 7 · 0⤊ 0⤋
not all plants are green, most of them are.Ex:mucor, a fungus, is a non-green plant.green plants are called autotrophs
these 'green' plants contain a pigment known as 'chlorophyll' which is pigment necessary for photosynthesis. this pigment also gives the green colour.
photosynthesis is a complex process, where Carbondioxide and water combine in the presence of sunlight and chlorophyll and convert then into glocose , then into starch and other complex organic compounds.
you can find plenty of information about green plants, chlorophyll, photosynthesis, autotrophs and also organic compounds in http://www.wikipedia.org
2006-06-12 06:50:19 · answer #4 · answered by Rohit 1 · 0⤊ 0⤋
The plants are green in color because of CHLOROPHYL. With the help of chlorophyl, oxygen and sunlight plant produce their food.
2006-06-12 06:32:55 · answer #5 · answered by urs_amit01 3 · 0⤊ 0⤋
clorophyl
2006-06-12 06:30:03 · answer #6 · answered by 42 6 · 0⤊ 0⤋