why dose sunlight helps in photosynthesis and not any other light?

Answer 1

Other lights do help. They just have to have UV rays, I think. It's not the light that feeds the plants, it's the Ultra Violet rays. the stuff you can't see. I could go into it on a more atomic level, but I'm not sure that's what you're looking for.

Answer 2

Plants are green because they absorb light at the red and blue ends of the spectrum but not the green light in the middle. They don't need green light for photosynthesis so they reflect it. The most efficient lighting for indoor plants isn't white, because the green component is wasted. Red and blue add up to make purple. So the lights sold for hydroponics installations are often purple. Of course, if you're going to work in a hydroponics hot house, you'll find purple lighting a bit tiresome, so many hydroponics operations have white lighting. The NZ Antarctic station, Scott Base, used to have a hydroponics installation to supply fresh vegetables during the long Antarctic winter, and it used white artificial light. Some people come down with depression, called seasonal affective disorder, when deprived of light. If you suffered from this in winter, they'd give you a job in the hothouse.

Answer 3

I don't know where you got that idea but their are a couple different types of light other than sunlight that assist in photosynthesis. Green plants can survive and acquire photosynthesis with artificial light.

Answer 4

Other people have talked about the spectrum, but as for the chemistry the energy of the photons absorbed drives electrons in molecules found in chlorophyll organelle (compartment within a cell) to higher energy states. As the electrons drop back to their lower energy states some of the energy is captured.

Think of the all the wavelengths of natural light as radio stations . In this case the plant wants simultaneously tune into as many stations as possible to get enough energy. (blue and red but not green) Most light sources emit only one wavelength of light. Thus only one "station" is being received by the plant. This one station cannot transfer enough energy for the plant to survive. Even if you put the light source almost against the plant, it's like blasting one radio station, but a spectrum of stations are needed for the plant to survive.

Answer 5

Well that's not true actually, plants can be grown under many forms of artificial light, in fact plants generally absorb the red end pigments in light and reflect the green, which is why most plants appear to be green. There is a world of research on plants and the different light frequencies they prefer, as well as on how to grow plants indoors with artificial light.

Answer 6

It is the ultraviolet spectrum that is most beneficial to photosynthesis. Most incandescent bulbs emit light that tends toward the infrared and only a small portion is actually visible to the human eye. That is why a 7watt fluorescent puts out as much visible light as a 40watt incandescent bulb. You can buy grow lights that put out more ultraviolet and can be used to grow plants.

Answer 7

sunlight possess different colors of light(spectrum) and the process of photosynthesis just dont need ordinary light..it functions with a specific type of light from the spectrum for different plants containing their type of chlorophyll.

Answer 8

other light does. they grow plants under flourescent lights, and now they have created some that give off the full spectrum of light so they do work best, however you need to keep them on 24/7 to create anywhere near the engergy of the sun in one days light.

Answer 9

Other lights do help but to a lesser extent. The UV spectrum is most beneficial to plants.