How light intensity effects the rate of photosynthesis essay

The process takes place in the leaves of green plants, this is what the leaves are for. If light intensity is increased, then the time it takes Spinacia oleracea disks to float will be decreased. The amount of oxygen gas consumed during cellular respiration and produced during photosynthesis was measured. The experiment also determined the rate of respiration and photosynthesis of a plant. Introduction: Photosynthesis is the process that produces 'food' for plants, this 'food' is called glucose. Then I will count them to write how many bubbles are produced. Growth responses in plant s positive phototropism is to the plant: it puts its leaves into the light for photosynthesis. A beaker of water 3.

To avoid the lamp being crooked and not providing the full beam intensity the lamp could be fixated other than to move it closer to the Elodea.

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 Evaluation: Overall, there was an increasing trend, however at 20cm there was an anomaly that occurred as it did not follow the pattern that the other results displayed.

bbc bitesize light intensity photosynthesis

Now I will place the meter ruler next to the test tube as shown in the diagram below and place the lamp along side it so the distance of the light can be measured accurately Then the other ruler parallel to the test tube. Results Table 1 Environmental condition Number of Oxygen bubbles Trial 1 Trial 2 Trial 3 Average Lamp 5cm from plant 83 77 89 83 Lamp 20cm from plant 28 21 19 23 Plant in sodium bicarbonate; lamp 5cm 99 DiscussionLight intensity affects photosynthesis.

The mean for the no light 0 Lux sample and the low light 4 x Lux sample was seconds with no standard deviation because none Mgc Practical Four Write Up. We use cookies to give you the best experience possible. If you test a leaf for glucose during photosynthesis, you are likely to find very little because it is changed to starch so quickly after it is formed. 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. To do this, I will place a piece of pondweed in varying light intensities and temperatures, and observe the amount of oxygen being given off. The Calvin Cycle. By Downey. This is called photosynthesis, which means "making through light".

Plants that live in water get it from their surroundings. There is no danger that carbon dioxide will run out in fact it is slowly increasing in the air because so much burning takes place.

If light intensity is increased, then the time it takes Spinacia oleracea disks to float will be decreased.

effect of light intensity on photosynthesis experiment pdf

Then I will place the plant inside the test tube with the pre-set amount of sodium bicarbonate. I then think that the rate of photosynthesis will stay the same when it reaches a certain point.

Proceed Due to the flowering plants can make their own organic food from simple inorganic substances and an outside source of energy, they are called producers.

effect of light intensity on photosynthesis experiment

As with many chemical process energy is need to make and break molecules during the chemical process.

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How light intensity affects the rate of photosynthesis.