What Factors Affect the Rate of Photosynthesis in living leaves? The whole project is reproduced here for your reference. Pour the solution, along with the disks, from the syringe into the appropriate clear plastic cup. For the 10dC solution, we put sodium bicarbonate in it and ice, then measured it until it cooled down to 10dC. However, since we had a small sample group, this was not proven. So at any point in time if one of the three factors is in low supply, this factor will be the limiting factor. As the temperature is increased, molecules in the cells will be moving at a faster rate due to kinetic theory. The consequence shows, as light strength additions, the rate of reaction will increase at a relative rate until a certain degree is reached.
Many errors could have occurred in this experiment. Give students time to design experiment and do a trial run. What is the optimal concentration of sugar in 60 mL of water for yeast? This can be measured by the amount of glucose produced by a plant over a given time. Make sure enough disks are available to properly complete a controlled experiment. Enzymes are protein catalysts that can initiate… More about What Factors Affect the Rate of Photosynthesis in Living Leaves? Hypothesis: The rate of photosynthesis in the water plant hydrilla will change as the rate of carbon dioxide changes. Conclusion Photosynthesis and the rate at which it occurs was shown in this experiment. If the experiment did not go as expected, offer an explanation.
Since cellular respiration is taking place at the same time inside of the leaf disks, the oxygen generated by photosynthesis will be consumed. As a result, the rate at which the disks will rise is proportional to the net rate of photosynthesis. Minimum temperature for many lichens is — 20°C. Using the energy from sunlight, it changes Carbon dioxide into water and Oxygen. Thus light is not a limiting factor at high intensity.
Both light strength and handiness of foods are of import factors that affect the rate of photosynthesis. At a higher temperature less O would be able to fade out into the H2O so the readings for the photosynthesis rate could be unnaturally increased. Oxygen is given off in this reaction as a waste product. To make sure there isn't any excess bubbles being carried over from the last experiment every time I repeat the experiment I will make sure that I turn off the lamp and make sure that the plant has fully stopped photosynthesising before I start the repeat experiment. This procedure may have to be repeated a couple of times if it does not work the first time.
Pour the bicarbonate solution into a clear plastic cup to a depth of about 3 cm 4. Once they sink, you can put them back into the sodium bicarbonate solution and expose the disks to light. A catalyst is a substance, which alters the speed, or rate of a chemical reaction but is chemically unchanged at the end of the reaction. While holding the vacuum, swirl the leaf disks to suspend them in the solution. The lab could be used in a unit on, the scientific method, a photosynthetic unit or in a unit on environmental problems global climate change and its affect on plants. Place both cups under the light source and start the timer.
Draw the gases out of the spongy mesophyll tissue and infiltrate the leaves with the sodium bicarbonate solution. The investigation has brought about the key factors that affect a Canadian Pond plant and how the rate of Photosynthesis changes and varies. Will plant A have the same rate of photosynthesis as plant B? Based on the data, what color of light results in the fastest rate of photosynthesis? When my experiment is set up correctly I will make sure my lamp is lined up at 10 cm and turn it and the stop watch on at exactly the same time. Therefore, early maternal behavior such as those increase the likelihood of receptor binding. What is the relationship between sodium bicarbonate and photosynthesis rate? More trials could be done by utilizing H2O that was at a higher temperature to see what consequence this would hold on the photosynthesis rate. Desert plants like cactus can carry on photosynthesis even at 55°C b Optimum: Maximum photosynthesis occurs at that point The optimum temperature also varies greatly.
Also, assure that there is no air remaining. However, plant A is placed in a enclosed glass box. But it decreases in strong light. Like all enzyme-driven reactions, the rate at which photosynthesis occurs can be measured by the disappearance of a certain substrate, or the accumulation of product. A cell with a high concentration of glucose would swell up by water absorption interfering with its function. Less than 1 percent water is absorbed by the plant. My prediction was fairly similar to the results that I got from my investigation.
Lesson organisation The work could be carried out individually or in groups of up to 3 students counter, timekeeper and scribe. This experiment evidently shows that the photosynthetic rate responds to one factor alone at a time and there would be sharp break in the curve and a plateau formed exactly at the point where another factor becomes limiting. The curve is very shallow and levels off towards a light intensity of 350 - 400. Final Method: To set up my experiment on how light intensity affects the rate of photosynthesis in the elodea I will need the following equipment: · Piece of elodea plant · Boiling tube · Beaker · Meter ruler ------------- · Stop watch · Lamp · Clamp · Water · Pair of scissors · Paper clip I will set up the experiment as shown in the diagram below by attaching the boiling tube filled with 50ml water onto a clamp that ensures it stays upright during the experiment and then placing that boiling tube into a beaker filled with 100ml of water. How does carbon dioxide get into a leaf? Purpose To look into how different factors affect the rate of photosynthesis. The particle theory will affect one of the variables so this will also have an impact on the other variable as old bonds are being broken and new ones are being made.