how does sunlight affect plants?
438448
When plants utilize sunlight to make carbohydrates from carbon dixode, and water in the chlorophyll.\nThe equation:\n6C02+6H20=C6H12O6+602
883000
Yes humidity does affect the growth of plants but the effect is greater in conditions of low humidity (dry).  When it is dry many plants will minimise opening of their stomata to reduce water loss this also has the effect of slowing gas exchange.  Plants need to take in CO2 for photosynthesis, if the stomata are closed this decreses the rate of photosynthesis and therefore the plant has less sugars created.  When the plant has less sugars (food) it can't grow as much.  \nSwamps can have the effect of flooding the root systems of plants so they don't work properly.  There are specially adapted plants that can survive in swamps, most can't.\nHope this helps
196945
Exposure to sunlight can (obviously) cause burns.  Over time, over-exposure can lead to cancer, as harmful solar radiation causes mutations in the DNA of your skin cells.  Sunight can also burn your retinas by being magnified by the lenses within your eyes.  Blindness can occur.\n\nOn the bright side, without sunlight we would all die by freezing to death.  If we could somehow survive that, we would then all die because without the sun, plants could not take carbon dioxide out of the air and create oxygen for us to breathe.  Sunlight is also needed in the production of vitamin D in our bodies.  Strangely, vitamin D helps against overproduction of cells, which is cancer!\n\nSunlight can both create AND prevent cancer!  You gotta love our sun!
140240
plants-through photosynthesis
1104794
No.  Plants don't absorb much UV.  Grow lights are designed to emit light in the wavelengths that plants absorb, so get a grow light.\n\nWhat does the visible spectrum have to do with plants?\nPlants must have light to grow and survive in their environment. The plants specifically use light to make their food in a process called photosynthesis. The light is absorbed by the green pigment chlorophyll, which is located in the leaves of the plant. The actual colors in the visible spectrum that the plant absorbs and uses for photosynthesis are red and blue. The plant reflects green light, and that is what we see when we look at a green plant. Green light is not the only reflected light. For instance, far-red light is also reflected. Far-red is just outside the visible light spectrum. It is not visible to the human eye, but can be sensed by the plant. Far-red wavelengths are important to the plant because of the competition factor in nature. A plant can "SEE" when there are other plants close by because of the increase of far-red wavelengths the other plants reflect. This will then signal the plant to make the necessary adjustments within their system to try to outgrow the others around them since they are competing for sunlight and other resources.\n\nhttp://www.florence.ars.usda.gov/kidsonly/middle/mulch3.html
851726
Sunlight is necessary for plants to grow, and to provide energy to warm the earth's atmosphere. Light intensity controls plant growth. Light duration affects plant flowering and animal/insect habits.\n\nNow, during photosynthesis, sunlight energy is used to power chemical reactions that combine water with the air's carbon dioxide to form starchy carbohydrate. In other words, during photosynthesis, sunlight energy is stored in carbohydrate for later use. Here's the simplified chemical formula for photosynthesis:\n\n6CO2 + 12H2O + sunlight ---> 6O 2 + C6 H12O 6 + 6H2 O\nor...\ncarbon dioxide + water + sunlight ---> \noxygen + carbohydrate + water \n \n\nSome carbohydrate remains in the leaf but mostly it's transported elsewhere in the plant, perhaps into the stem, or maybe into special underground storage areas, such as the potato plant's potatoes.
452427
solar radiation - UV rays are damaging to the DNA of skin cells and can result in cancer
1028782
Stomata are open when the guard cells that surround them are turgid, meaning they have absorbed water to increase their interior pressure.  When a sugar solution is placed around these guard cells artificially, it has the effect of changing the osmotic pressure, causing water to diffuse outward from the guard cells, lowering their interior pressure and causing the stomata to close.  This mimics the changes in sugar concentration in guard cells when the cells are exposed to sunlight and produce sugar by photosynthesis.  Higher sugar concentrations inside the guard cells draws water into the cells by osmosis, causing the cells to swell and thus causing the stomata to open.  All of this allows more diffusion of gases through the stomata into and from the interior of a plant leaf during the photosynthetic process.
1176203
One way it actually interacts is by catalysing chemical reactions-various spectrums of light increase atomic bonding between different chemicals and atoms. Of course there is heat, the solar radiation excites atoms and increases their activity, generating heat. Most everything else is optics, like things we say as white reflect almost all the light hitting them and things we see as black absorb the entire spectrum of visible light.
607027
Yeah plants can grow without sun. those plants are called are non-photosynthetic plants. as they do not have photosynthetic pigments. They are also termed as chemosynthetic plants as they prepare their food by chemicals and not by sun light. As far as water is concrned then no plant on earth gorws without it. Water is essential for every livig animal. Its basic requirement for solutes and solvents to get transported from one cell to another. without it plants will DIe. try growing plants without water, they will shrink and eventually die.
170048
The ratios of red, blue and far red light are the most important (light)factor affecting the morphology of plants.  This ratio allows plants to detect when they are shaded.  If alot of far red light is sensed the plant senses shade and will show an elongation of the shoots in an attempt to "reach up" to gain sunshine.  If there is ample red and or blue light the plant can tell that it is getting enough sunlight and it can utilize its energy by producing more leaves and roots and not spend valuble resources just trying to elongate its shoots to reach above the canopy.The canopy "soaks up" most red and blue light leaving far red light to pass through to the plants below.\n\nRed and blue light inhibit stem elongation, far red light inhibits this inhibition.\n\nStart two tomato seedlings, one in shade and one in sunlight to observe this effect.
135263
Yes,the amt of light affects plants growth.\n  The response of a plant to the relative lengths of light & dark periods is known as Photoperiodism.From the 1st observation on Maryland Mammoth variety of tobacco(Nicotiana tobaccum),it aws found that plants require specific period of light & darkness for flowering,known as critical period.\n\nThe plants requiring longer light than critical period r called long day plants. eg.Wheat,oats.\nThe plants requiring shorter period of light than cri.period r called short day plants.eg.tobacco & chrysanthemum.\nThe plants in which flowering is unaffected by photoperiod r called day neutral plants.eg.Sunflower,maize.
272099
Sun is the source for light and light is needed and is used by plants for photosynthesis. by photosynthesis plans prepare their own food which helps them to grow and we humans eat plants as well as animals so if we have light then everything is possible....
725732
Almost all plants absorb solar radiation and convert it to food using photosynthesis.
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.
417320
depends on the lighting. Auxin plays a huge role in the plant and can change constantly. Cytokins and Gibberellians are also horomones in a plant but they usually regulated by either the plant gene or the plant cell.
20091
yes, any light can.  photosynthesis just requires photons of light at certain wavelengths, and any white light whether 'natural' or 'artificial' contains all wavelengths of light, and so photons of the proper wavelength will reach the plant and allow photosynthesis to occur.  there is nothing special about the photons from sunlight.  if i remember correctly, the wavelength plants need is 680nm for photosystem I and 700nm for photosystemII(or maybe i have that backwards) in the light cycle of photosynthesis... well anyway, you should be fine with any kind of light as long as it's not purely green light(because chlorophyll can not absorb green light, it reflects green light which is why it is green and leaves without pigmentation are green.)