A essay of how light intensity affects the rate of photosynthesis

This is called photosynthesis, which means "making through light". Aim: To see if raising the light intensity increases the rate of photosynthesis. It is taken in by the green pigment in all plant cells called chlorophyll, which is located in the chloroplasts of the cell.

Introduction Photosynthesis is the process in which chloroplasts found in plants, algae and some bacteria are used to convert light energy to chemical food energy.

Effect of light intensity on photosynthesis experiment pdf

Number of oxygen bubbles produced Controlled variable: The time when the oxygen bubbles are counted must be the same 5 min The distance between the elodea and the lamp The temperature of the water The mass of Elodea Risk Assessment: How it can be avoided? One of the variables that we could not control was the size of the oxygen bubbles or the age of the plant which may have influenced our experiment. I believe that the higher the light intensity is, increases the rate of photosynthesis as it is would no longer be a limiting factor of photosynthesis and therefore the plant would photosynthesize at a higher rate, which is shown in my results. Measured by the amount of bubbles produced in 2 minuets words - 12 pages quicker the reaction of photosynthesis will occurI also think that when drawn on a graph there will be a rapid increase in the rate of photosynthesis then it will level out as there will be limiting factors such as temperature and carbon dioxide concentration. An increase in light intensity will increase the rate of photosynthesis. To improve my investigation, I would Make sure that no other light sources could affect the experiment, to close all the blinds and Measure the oxygen produced using a capillary tube or another device which could measure more accurately how much oxygen is produced. There were external light intensities that also may have influenced the results. Your time is important. Water is taken in via the root hairs which stick out in to the soil, these are located on the roots themselves, because of these root hairs this gives the plant a bigger surface area in which it can absorb more water. If light intensity is increased, then the time it takes Spinacia oleracea disks to float will be decreased. Therefore it means that increasing the light intensity will boost the speed of photosynthesis. Add sodium bicarbonate powder to the test tube, place the lamp 5 cm from the test tube, after several minutes record bubbles. I do not believe that our measurements were accurate due to influential factors that may have affected the results. Photosynthesis is the process through which plants make their food by converting light energy into chemical energy. 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 proportional increase will happen because of the reason that I have already mentioned above, and there will be a point where the light intensity will not affect the rate of photosynthesis because another factor will be limiting the rate of photosynthesis e.

According to Sadava et al increasing light intensity would tend …show more content… Do another trial. Photosynthesis is the process through which plants make their food by converting light energy into chemical energy.

effect of light intensity on photosynthesis

Effect of light intensity on rate of photosynthesis on elodea plant words - 18 pages upward end where you cut for 2 min. According to Molina. 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.

Poorly PondweedQuestions1 How does light intensity affect the rate of photosynthesis?

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How Light Intensity Affect Photosynthesis Essay example