I have two plants for the science fair one in the dark and sun.why is my darkness plant growing 10 times fastr
360436
that may just be for the beginning of it's growth eventually it will stop growing because of lack of sunlight and it may be that the sun is drying up the water in the other plant in the sun
766609
Carbohydrates are formed when plant completes both light and dark reaction.\n\nIn light reaction when ADP molecules get energy they are converted into ATP.Water breaks into and H+ and OH-.H+ reduces NADP(nicotinamine adenine dinucleotide phpospate) into NADPH2\n\nIn dark reaction there is a cycle of reaction called Kalvin-Benson cycle.The whole reaction can be given as follow:\n\n6CO2+12RuBp + 12NADPH2 + 18ATP------------C6H12O6+12RuBP + 12NaDP +6H2o + 18ADP
329575
put the plant in a box, with only a small opening for light. by small i mean about 2 inches by 2 inches. the plant will actually grow and bend in the direction of the light. leaves and branches will eventually start to grow out of the hole. it has to, or else it will die. maybe you can see which species does this fastest? just an idea.
60093
Some plants adapt to a crowded environment by changing their growth characteristics.  Many plants can sense crowding by the lack of an ability to spread their roots very far.  Some plants will start to change in what I consider to be an impressive display of "The Survival of the Fittest."  A short, bushy plant can start growing thinner and taller to fight out its neighbors for sunlight.  This can be common on forest floors (and even in the potted plant on my windowsill! It started growing upwards instead of outwards when it outgrew its pot. It must have thought it needed to start competing for light).
805511
what exactly is your question? \nYour potato is growing in the dark because it is what potatoes do if you give them time and water/moisture. If potatoes wouldn't do that there wouldn't be any potatoes around, they would have long ago gone extinct. \nIt is albino because light is needed to induce the syntesis of chlorophyll. It will also grow taller and only have tiny leaf-like structures because under normal circumstances a growing potato experiences permanent darkness is under the ground in the soil. It's only way to develop into a normal potato plant is grow like crazy upwards so it gets out of the ground and gets some sunlight. It is pointless to put energy at this stage in developing leaves. \nIf you never give it light it will grow until all the energy stored in the potato is used up and then it dies.
110101
Plants use a very small portion of the light generated by a standard incandescent bulb.  They sell grow lamps which generate a wider spectrum of light that plants can use.
65111
I believe that actually the leaves of plants in the shade are more pale then in the sunlight, not darker. That's because the chlorophil which contained in leaves are not fully used for photosynthesis. The less of usage, the more pale the leaves would be. Probably u know that the leaves look greener if they have enough sunlight.
798451
I would expect light exposure variance has much to do with it. Look at how it effects circadian rhythm, for instance. Probably begins a cascade of varying hormonal changes.
1103871
sunlight stimulates photosynthesis and larger amts produce more growth, lesser amts less growth.......Seasonal light changes inc growth in the spring as light hours incresae, and Fall lesser light as days dec in length slow growth. Same goes for daily changes......Strings of Rainy days vs sunny days!!!! Look outside if you live on the Eastern coast of the US......
521732
There must be some information in your text that allows you to figure this out - for example, when during the year the plant naturally flowers, or whether it belongs to a family of plants that behaves a certain way? I presume your text also tells you that it's better to think about long-day plants as short-night plants and same for short-day, because it's the length of the dark period that has the stimulatory effect.
207951
Plants can sustain photosynthesis (and release oxygen) from any lightsource that has enough energy. But plants can also get stressed by too much light and actually get sick. They might also grow in unnatural ways, like growing sprouts all over, if "fed" the wrong amount of light for too long periods of time. \n\nPlants are tuned to natural light during ordinary hours but some plants can even "OD" on sunlight. When the sun shines too hot during a hot day they sometimes shutdown photosynthesis and begin to perspire. \n\nIt all comes down to what kind of plant it is. An ordinary house plant should release oxygen if the artificial light is not too intensive.
153622
Photosynthesis consists of two stages: a series of light-dependent reactions that are temperature-independent and a series of temperature-dependent reactions that are light-independent. The rate of the first series, called the light reaction, can be increased by increasing light intensity (within certain limits) but not by increasing temperature. In the second series, called the dark reaction, the rate can be increased by increasing temperature (within certain limits) but not by increasing light intensity.\n\nThe first step in photosynthesis is the absorption of light by pigments. Chlorophyll is the most important of these because it is essential for the process. It captures light energy in the violet and red portions of the spectrum and transforms it into chemical energy through a series of reactions. Different forms of chlorophyll and other pigments known as carotenoids and phycobilins absorb slightly different wavelengths of light and pass the energy to a form of chlorophyll called chlorophyll A for the completion of the transformation process. These accessory pigments thus broaden the spectrum of light energy that can be fixed through photosynthesis.\n\nPhotosynthesis takes place within cells, in organelles called chloroplasts (in the leaves of plants) that contain the chlorophylls and other chemicals, especially enzymes, necessary for the various reactions. The chemicals involved are organized into units of the chloroplasts called thylakoids, and the pigments are embedded in the thylakoids in subunits called photosystems. Light is absorbed by the pigments, raising their electrons to higher energy levels. The energy is then transferred to a special form of chlorophyll A, called a reaction centre.\n\nTwo photosystems, numbered I and II, are recognized. Light energy is first trapped by photosystem II, and the energized electrons are boosted to an electron receptor. They are replaced in photosystem II by electrons from water molecules, and oxygen is released. The energized electrons are passed along an electron transport chain to photosystem I, and energy-rich adenosine triphosphate, or ATP, is generated in the process. Light energy absorbed by photosystem I is then passed to its reaction centre, and energized electrons are boosted to its electron acceptor. They are passed by means of another transport chain to energize the coenzyme (see Enzyme) nicotinamide adenine dinucleotide phosphate, or NADP, resulting in its reduction to NADPH2. The electrons lost by photosystem I are replaced by those passed along the electron transport chain from photosystem II. The light reaction ends with the energy yield stored in the ATP and NADPH2
279328
I did one.  However, how much time do you have to complete it?\n\nIn one of my projects, my mom bought seeds from the store and we planted them in two plant pots.  One was placed in a corner of the living room where lighting was not to bright and non at night.  The second pot was placed by the kitchen window (choose the window where sun light comes thru to your home the most) and during the night, we lit a plant light so that the pot received constant light.  \n\nBy the end of the month, I compared the two pots and what/how the plants grew.  Guess what happened?  To find out, do the project.
400592
Plants undergo photosynthesis i.e. in absence of light, they inhale oxygen and exhale carbon dioxide.  In presence of light, the process is reversed.\n\nAssuming that you are experimenting with a plant (& not a farm).  You can pump fresh air in a chamber and keep the plant dark, you will see some improvemnets.  However you will see loss of chlorophile (which makes the leaf green) and eventually leaves will become brown...Hence, you do need a light/dark cycle.\n\nSo provide light/dark cycle and during light cycle, provide ample carbon dioxine and in the dark, increase air circulation and plant will grow like a weed.
924591
All plants need sunlight for the process of photosynthesis, which is one of the ways the get their "food."  Therefore, no green plant will grow in a dark cellar.
1093142
Darkness is the absence of Light!....Same Speed?\n\nIf we are talking about 'How long it takes to go Dark',  then it depends on the time of year (whether the Sun is below or above the Equator, and to what extent), you level of latitude on the Planet..... Because, it changes nearer to the poles because, firstly the Earth is not a perfect Sphere (it is flatter at the poles), and secondly (and very important to our weather, etc), the Earth is inclined at an angle (10 degrees at Poles?) which results in the Tropical Zones...\n\nConclusion: Faster the further North in Winter, slower in  Summer!....... A friend says, blooody quick at the Equator, but never been there to see!
935569
I'm always happy to help out a Van Halen fan! Anyway, photosynthesis is the process by which plants convert sunlight into energy and fuel to grow, and also to manufacture proteins, the most important of which is chlorophyll, which gives plants their green color. They also convert this light into sugars anfd starches, which they need to grow. (The storing of these sugars, in fact, along with the slowing down of the photsynth, is what gives those autumn leaves their great colors.)  During the dark hours the plants are basically dormant, and thus no photosynth taking place, but they are still respirating, i.e. taking in carbon dioxide and releasing oxygen. They do this in light too, of couse, but at a faster rate. But just like we need our sleep, the plants need the dark also to rest and store their food, otherwise they would expend it all and thus dry out, which is why they get yellow (depleted chlorophyl) with too much sun.