why are  the leaves of the plants and trees are generally green colour?
340945
Because leves contain pigment Chlorophyll, which absorb all colors except green.That is why!
962117
The main photosynthetic pigments in plants is the green pigment called chlorophyll found in the chloroplasts.
943391
Leaves are nature's food factories. Plants take water from the ground through their roots. They take a gas called carbon dioxide from the air. Plants use sunlight to turn water and carbon dioxide into glucose. Glucose is a kind of sugar. Plants use glucose as food for energy and as a building block for growing. The way plants turn water and carbon dioxide into sugar is called photosynthesis. That means "putting together with light." A chemical called chlorophyll helps make photosynthesis happen. Chlorophyll is what gives plants their green color. \n\n\nAs summer ends and autumn comes, the days get shorter and shorter. This is how the trees "know" to begin getting ready for winter. \n\nDuring winter, there is not enough light or water for photosynthesis. The trees will rest, and live off the food they stored during the summer. They begin to shut down their food-making factories. The green chlorophyll disappears from the leaves. As the bright green fades away, we begin to see yellow and orange colors. Small amounts of these colors have been in the leaves all along. We just can't see them in the summer, because they are covered up by the green chlorophyll. \n\nThe bright reds and purples we see in leaves are made mostly in the fall. In some trees, like maples, glucose is trapped in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn cause the leaves turn this glucose into a red color. The brown color of trees like oaks is made from wastes left in the leaves. \n\nIt is the combination of all these things that make the beautiful colors we enjoy in the fall.
872592
Well, you know that a tree's leaves turn brown in the winter. There is a reason for that. What makes a tree's leaves green is chlorophyll. All during spring and summer a tree is flooding it's branches and leaves with chlorophyll and the combination of sunshine and rain creates photosynthesis. This creates more chlorophyll. \n    During the winter months a tree stops sending chlorophyll to the branches and instead stores it and lives on it all winter until spring.
194060
Green looks like grass and nature .John deere wanted to go green to blend with the enviorment nothin'g says nature like digging it up and tearing it down.\nGL
909341
it has to do with wavelength of the light.  the reason why plants are green is because they don't absorb the green light, green litht has a shorter wavelenght.  on the other hand If the object absorbs  blue, green and yellow light it will appear red  so I guess it does have to do with the material\nhope it helps
141347
Green!! It is the color of money, grass, leaves and all things good.
710247
The chloroplast cells absorb all other colors besides green. So green is reflected...
33703
Pigments are organic molecules that absorb light of specific wavelengths; in plants, the most important pigments of plants are chlorophylls,anthocyanins and carotenoids. As they absorb different colors, they reflect others and those are the ones we see.\nGreen leaves have lots of the photosynthetic pigments (chlorophylls) that absorb mostly blue and red light, while they reflect green.\nIn autumn the chlorophylls break down and other pigments (carotenoids) that absorb all colors except for yellow and orange become visible. As the other answerer said, those pigments were there all along, masked by the green pigment.\nSome plants manufacture anthocyanins that make their leaves red.As those pigments are synthesized _in addition_ to the other pigments, and as a "special effort" of the plant, they have been suggested to have protective role.
500932
Green would be worst, because plants reflect green--that's why they appear green. There are two main chlorophylls (types alpha and beta) that are your main concern. Check out the absorbtion spectra on the link prvided--there are four peaks, two for each chlorophyll. Your best bey is to optimize the light output in these four regions as best as possible.
956897
Leaves turn colors in the fall because the tree stops supplying the leaf with water.  This stops the process of photosynthisis which is where the chlorophyll in the leaf changes sunlight into energy.  The green chlorophyll start turning yellow, red and brown for lack of food.  The leaves fall off the tree and die, allowing the tree to store water for winter and live on until spring.
100772
the roots absorbed minerals in the soil and the trunk/branches transport the nutrients to the leaves which manufature the plant food through a proccess called photosynthesis by the action of the chlorophyl which is the green color of the leaves, and the sun's ray
166918
the grass is green because of the chloroplasts, which contain chlorophyll, which is essential for photosynthesis (the process by which plants convert sunlight into energy). the sky is blue because of the water droplets in the air reflecting the oceans. all the colors are the way they are because we see them that way and we decided to name them.
729932
The photosynthetic pigments on the chloroplasts (more specifically, the thylakoid membranes) work by absorbing light.\n\nThe most abundant photosynthetic pigment is chlorophyll A and B, which like to absorb every color except green, which is reflected :)\n\nBecause there's a lot of green-reflecting chlorophyll, the chloroplasts appear green. Of course there are also pigments that reflect other colors (e.g. carotene reflects orange), but there are far fewer of those so we still see green.
443022
Various plants have different accessory pigments in addition to chlorophyll.These various pigments are more efficient at using different wavelengths or under low or bright light conditions. For instance, many rain forest plants that live on the forest floor have a reddish undercoating to trap certain wavelengths of light. So, the various colors are adaptations to handle different growing conditions and allow the plant to grow adequately in areas where other plants cannot grow well.
359262
The color of the plant leaves is what part of light it does not use.\n\nso a green leave uses all of the sun light but not the green wavelength, so it is reflected to your eyes. \nSo a green plant will not grow in green light.\n\nOf course, some plants are not green, but the same idea applies.
672889
>>>why most common chlorophyl on most leaves is the the\n>>> green one? not the red one, or other color instead...\n\nChlorophyll only comes in one colour: green. There are red and yellow accessory pigments, but they are not chlorophyll and serve only to transfer energy to chlorophyll. The chlorophyll is still required to use those accessory pigments.\n\nAs for why chlorophyll predominates, it is simply because chlorophyll blue light, and red wavelengths are the most common wavelength in sunlight. Or to put it another way, chlorophyll has evolved to absorb that part of the sunlight where the most energy is.\n\nIf leaves were any colour but green they would be wasting most of the energy in sunlight.