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Effect of different colors of light on the rate of photosynthesis.

This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...

Variables: The variables that might affect the rate of photosynthesis in this experiment are: Temperature: When the temperature rises so does the rate of photosynthesis; this is because as the temperature around the plant rises the enzymes controlling photosynthesis inside the chloroplasts heat up and start moving around faster, the fast moving molecules collide with other fast moving enzymes causing them to react....

Photosynthesis requires the following resources; Carbon Dioxide, Water and light.

Effects of different colors of light on the photosynthesis rate.

The Plan In my experiment I am going to see how light affects the rate of photosynthesis.

Fig. 1. A leaf cross-section of a typical broad-leaved plant illustrating the arrangement of major cells and tissues. Flavonoids accumulate in the thin epidermal tissue where they absorb UV light while transmitting visible light, which is used for photosynthesis of the mesophyll tissue. Increases in flavonoids (plant sunscreens) in the epidermis will decrease the penetration of UV to sensitive targets in the underlying tissues.



Limiting factors are:

* Carbon Dioxide

* Temperature

* Amount of water

* Light Intensity

If we run out of Carbon dioxide, water or light photosynthesis cannot
take place.

Would you illuminate your house plants with a green light bulb.

Many of us are routinely advised by our dermatologists to put on our sunscreen before we go outside and to even add more sunscreen in the middle of the day when the sun’s UV rays are most intense. Wouldn’t it be nice if our bodies could sense how much UV is reaching our skin and then automatically adjust our natural sunscreen protection (in our case the pigment melanin) so as to avoid the negative effects of high UV exposure, such as skin cancer? Well, it seems that many green plants do such a thing on a regular basis. Plants have their own natural UV sunscreens (colorless pigments called flavonoids), which accumulate in their skin (epidermis), and these chemicals filter out much of the detrimental UV before it reaches sensitive photosynthetic tissue inside their leaves (Fig. 1.).

I think this because the plant may use up all of the carbon dioxide (Sodium hydro carbonate) and the plant can have as much light as it needs but if it does not have any carbon dioxide it will not be able to photosynthesise....

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The Greenhouse Effect - HyperPhysics Concepts


Effect of colour of light on the rate of photosynthesis

The Effects of Different Colored Lights on Algal Oxygen ProductionPhotosynthesis Background Resources











Plants fare poorly when illuminated only with green light

You can relate these results to Exercise A, Part 3. Remember how it was shown that wavelengths of red (610 - 700 nm) and blue (450 - 500 nm) resulted in the greatest amount of photosynthesis? The same is shown here in the graph - light is absorbed by the pigments better at those wavelengths as compared to others. Green, once again, is absorbed least. It ain't easy being green. ;-)

Effects on Photosynthesis - Team Green-Pollution's …

The Effects of Elevated Carbon Dioxide Levels on the Transpiratoin Rates of Zonal Geranium PlantsHow Does the Introduction of NaF Affect the Rate of Photosynthesis in Isolated Chloroplasts?

FREE How does light affect the rate of photosynthesis …

Additionally, certain flavonoids not only function as UV sunscreens but simultaneously play important roles in defending plants against pests and pathogens. Food plants high in flavonoids are also an important dietary source of antioxidants. Unfortunately, many vegetables, such as tomatoes and lettuce, are often grown indoors or in greenhouses where the natural diurnal UV cycles are either absent or greatly diminished. Thus, much of our produce lacks “normal” levels of flavonoids. In an effort to improve the nutritional quality of their crops while at the same time enhancing these plants’ natural defenses against herbivores and diseases, some growers are beginning to supplement light with UV from lamps. However, unless these lighting systems can mimic the natural daily cycle in sunlight, this additional UV may do more harm than good.

Effect of light intensity on photosynthesis

Because the potential consequences of global warming in terms of , , change in weather patterns, etc are so great, it is a major societal concern. On the other hand, proposed measures to reduce human contributions to greenhouse gases can also have great consequences. The large potential impact combined with the ambiguities of the science has given rise to many passionate extremes.

The Effect of Photosynthesis and Respiration on the ..

There are four things that are required by the plant before it can carry out photosynthesis, they are light, chlorophyll, carbon dioxide and water ....

the Effects of Light Intensity on Photosynthesis

Furthermore, I predict that if the light intensity increases, the rate of photosynthesis will increase at a proportional rate and more oxygen will be produced and therefore the oxygen levels will increase.

Green Light профкосметика Италия

The Effects of pH Levels and Phosphorous on the Photosynthesis Process of Aquatic PlantsStudy the coniferous spruce tree (Picea glauca as the species of choice) by measuring its lateral and sub-lateral branch angles in order to see how it collects sunlight from various angles on its south-facing side.

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