The Effect of Light Quality and Light Quantity on a Photosynthetic Plant
Introduction:
Photosynthesis can be defined as light energy being converted into chemical energy, which is a very important process for plants and other organisms.
Light can be described in terms of light quantity and light quality. Both of these have an affect on photosynthesis. The more light a plant absorbs the more the plant is able to photosynthesize. This light is absorbed though pigments which have specific interactions with certain light waves (colors). The goal of my first experiment was to test the effect that which different colors have on photosynthesis, in other words the amount of oxygen that is produced.
As previously mentioned, oxygen is a product of photosynthesis. In my second experiment, I tested whether light intensity has an affect on photosynthesis, in other words the release of oxygen. µmol m-2 s-1
Methods:
Light quality:
First, I cut off the Egeria of a plant and placed in a bicarbonate solution. Then, I started by placing a green filter in front of the test tube turning on the projector. Next, I set the PAR at 70 µmol m-2 s-1 by moving the projector closer or farther from the plant. At that time, I brought the test tube with the Egeria in closer and exposed the green light on to it starting me stop watch at the same time. I allowed the stem to photosynthesis for three minutes and recorded the amount of oxygen which was released. I repeated the same process with the blue, red and white filters. After I took all the measurements with all the filters and weighed my plant on a scale.
Light quantity:
With this experiment I used two plants, a light plant and a shade plant. First of all, I switched on the projector so that I could adjust my light intensity to my liking by placing the projector closer or further away from my plant. Then, I placed a transparent water bath in between the projector and test tube. Next, I took the light plant and placed it in the test tube and began the stop watch simultaneously. I let the plant
Photosynthesis can be defined as light energy being converted into chemical energy, which is a very important process for plants and other organisms.
Light can be described in terms of light quantity and light quality. Both of these have an affect on photosynthesis. The more light a plant absorbs the more the plant is able to photosynthesize. This light is absorbed though pigments which have specific interactions with certain light waves (colors). The goal of my first experiment was to test the effect that which different colors have on photosynthesis, in other words the amount of oxygen that is produced.
As previously mentioned, oxygen is a product of photosynthesis. In my second experiment, I tested whether light intensity has an affect on photosynthesis, in other words the release of oxygen. µmol m-2 s-1
Methods:
Light quality:
First, I cut off the Egeria of a plant and placed in a bicarbonate solution. Then, I started by placing a green filter in front of the test tube turning on the projector. Next, I set the PAR at 70 µmol m-2 s-1 by moving the projector closer or farther from the plant. At that time, I brought the test tube with the Egeria in closer and exposed the green light on to it starting me stop watch at the same time. I allowed the stem to photosynthesis for three minutes and recorded the amount of oxygen which was released. I repeated the same process with the blue, red and white filters. After I took all the measurements with all the filters and weighed my plant on a scale.
Light quantity:
With this experiment I used two plants, a light plant and a shade plant. First of all, I switched on the projector so that I could adjust my light intensity to my liking by placing the projector closer or further away from my plant. Then, I placed a transparent water bath in between the projector and test tube. Next, I took the light plant and placed it in the test tube and began the stop watch simultaneously. I let the plant