Rate of photosynthesis and light intensity experiment. Investigating factors affecting the rate of photosynthesis 2019-01-14

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Effect of Light intensity on the rate of Photosynthesis

rate of photosynthesis and light intensity experiment

The intensity in this experiment was increased by moving the tube closer to the light. In France, aubergines and cucumbers are often soaked in salt to create a nicer texture, however chefs lack understanding of why this happens, as they would have forgotten about it after they finished school, they only know that it happens. The amount of oxygen production was determined after five minutes at each light intensity. Sometimes cutting 2—3 mm off the end of the weed will induce bubbling from the cut end, or change the size of the bubbles being produced. It is useful to study factors that affect rate of photosynthesis in order to determine the conditions of optimal photosynthetic activity and explain various characteristics of plants.

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How does light intensity affect the rate of photosynthesis in Elodea (pondweed)?: Essay Example, 766 words GradesFixer

rate of photosynthesis and light intensity experiment

In this experiment, the light intensity is being investigated on how this limiting factor can affect the rate of photosynthesis. Observation: Both the results are plotted on graph paper and the relationship between absorption spectrum and action spectrum determined. Invert the graduated tube and close the stopcock b and fill the graduated tube with water up to a desired mark. A green light was used in order to see. It does, though tend to break apart very easily, and fish may eat it very quickly. A leaf typically consists of an upper and lower epidermis, the mesophyll cells, veins, guard cells and stomata. The reason that light intensity does affect the rate of photosynthesis is because as light, and therefore energy, falls on the chloroplasts in a leaf, it is trapped by the chlorophyll, which then makes the energy available for chemical reactions in the plant.

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Light Intensity and Rate of Photosynthesis (Carol Cao)

rate of photosynthesis and light intensity experiment

Materials and Equipments Required: 1. Place the funnel on top of the elodea overturned, and place the test tube on top of the funnel. Chloroplasts contain molecules of a green pigment called chlorophyll, consisting largely of carbon and hydrogen. Gradually the rate falls of and at a certain light intensity the rate of photosynthesis stay constant from point B to C on the graph. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. The air-saturated buffer is taken to be 100% O 2 and the pen adjusted accordingly. The chloroplast solute was also subject to light many times before the experiment started and during it opening the fridge door, low but existing ambient light in the room of the experiment allowing one to see.


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Photosynthesis Experiment: Hill Reaction

rate of photosynthesis and light intensity experiment

For photosynthesis to take place, energy… 2153 Words 9 Pages ¡V Does The Light Intensity Affect the Rate of Photosynthesis The Investigation In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis process. Role of the colour of light during Photosynthesis Did you know that the colour of light plays an important role during photosynthesis? Since the oxygen bubbles are a product of photosynthesis, one can conclude that the more bubbles formed, the more photosynthesis occurred, thus increasing the rate of photosynthesis. Four things are needed to make this process work and this gives two thing: the four things needed are light from the sun, carbon dioxide diffuses from the air, water from the soil and chlorophyll in the leaves. However, I can help you out with what I remember from the layout of the test. Finally energy and reductant thus formed from electron flow path Light reaction is used for chemical reaction i. Results Distance of light from plant First time cm Second time cm third time cm average 0 cm 4.

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Different wavelengths of light affect on photosynthesis...

rate of photosynthesis and light intensity experiment

Method I will set up my experiment using the following equipment: 1 test tube filled with water and 0. Water is essential for the process of photosynthesis and also to stop the plant from wilting, because plant cells take up water via osmosis which makes them tight or turgid and so the plant stays upright, but if there is no water in the cell then the cell becomes flaccid and loose causing the plant to wilt and die. Materials and Equipments Required: 1. You are asked questions like 'What is the method for this experiment? The rate of oxygen production increased relatively rapidly at lower light intensities but leveled off at intensities greater than 5300 lux, suggesting that light intensity is a limiting factor of photosynthesis below 5300 lux. Photosynthesis Experiment: Hill Reaction Essay Sample Aim of the Experiment: To analyse the effects of light intensity on photosynthesis via the Hill reaction.


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Different wavelengths of light affect on photosynthesis...

rate of photosynthesis and light intensity experiment

Incandescent light bulbs provided the light source for leaf segments to undergo photosynthesis. The teacher can now review what a hypothesis is and how to write a specific, testable hypothesis. This proves as light increases, so does rate of photosynthesis which is because the chlorophyll has more light to absorb for photosynthesis. Six cuvettes were then obtained and labeled with the numbers 1 through 6. The process of converting carbon dioxide taken from air and water from the soil into complex substances like glucose, is called photosynthesis and can.

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How does light intensity affect the rate of photosynthesis in Elodea (pondweed)?: Essay Example, 766 words GradesFixer

rate of photosynthesis and light intensity experiment

The absorbance of tube 6 went all the way down to 0. The guard cells, on the bottom layer, control the amount of gas movement in and out of the leaf. Determinations of Dissolved Oxygen by Titrimetric Method: It is well-known that, during photosynthetic light reaction, phase hydrolysis of water — resulting in the production of O 2 acid — consequently enable to run the photosynthetic electron flow path. Q 10 may be calculated from the rise of the rate of photosynthesis at every 10°C rise of temperature from the graph. Observation: The experimental sets with chloroplast suspensions showed reduction of dye due to Hill reaction.

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Designing an experiment to test the rate of photosynthesis

rate of photosynthesis and light intensity experiment

Oxygen is a product of the light dependent reactions. Is the data collected qualitative or quantitative data? My main interests at this time include , walking, and learning how to do everything faster. We can do the same for temperature. Observe the plant without the use of the light source. First, a room was insulated from light and the lights were turned off. This brings us to a question for further experimentation.

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Photosynthesis Experiment: Hill Reaction

rate of photosynthesis and light intensity experiment

The teacher will now demonstrate to students the basic technique that will be used to measure the rate of photosynthesis. Neither of the control groups Control 1 or 2 showed any signs of photosynthesis. The colorimeter wavelength was set to 635 nm. Chlorophyll is the green substance found in chloroplasts and this is why leaves look green. Set up an experiment using distilled water and Hydrilla plants in the beaker and a funnel fitted with jet-glass tube.

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Measuring the rate of photosynthesis

rate of photosynthesis and light intensity experiment

Additionally the trials taken at 10cm had an exceptionally high measurement. A leaf has a petiole or the stalk and a lamina, the flat portion of the leaf. The only changes I will be making is to the light intensity by moving it closer or nearer to the plant, Safety precautions I will follow the following safety precautions to make sure the test goes well. A replica of three separate sets were done. Overall, it was shown that no light source at all and… 1912 Words 8 Pages Plan I plan to investigate how light intensity affects the rate of photosynthesis in pondweed.

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