Set up apparatus as shown in diagram 4. Plants make food using photosynthesis. Fill a beaker with tap water and add 5cm3 saturated sodium hydrocarbonate solution. It produces glucose, and oxygen as a by-product. Plant Growth Plant growth processes involve the use of light, carbon dioxide and water to manufacture food for the plant’s use, according to the Texas A&M University Agricultural Extension Service. This needs light, carbon dioxide and water. This can be achieved by measuring the change in CO2 concentration of each plant in a sealed environment over a given time period at different light intensities. Select a pondweed shoot about 2-4cm long 3.

Use Cabomba or Elodea, which are sold in aquarium shops. After I have carried out my experiment I have discovered that the light intensity has an effect on the rate of photosynthesis. 2. The effect of light intensity on photosynthesis can be investigated in water plants.

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. #41 Effect of Light intensity on the rate of Photosynthesis Count the number of oxygen bubbles given off by the plant in 1 minute period. Investigation to find out how light intensity effects the rate of photosynthesis 1. Light intensity levels can have a significant effect on photosynthesis rates, which are directly related to a plant’s ability to grow. Leaves are adapted to carry out photosynthesis. The effect is that the higher the light intensity the increase in the amount of bubbles produced, this bubble produced from the plant is oxygen. (Pang 2006) In my result, the distances from light intensity are increased when the rate of photosynthesis decreases, which mean when the light intensity decrease, the rate of photosynthesis … This study aims to determine whether the amount of light, and therefore light energy available, affects the rate of photosynthesis by comparing shade and light grown plants. The gas should be checked to prove that it is indeed oxygen - relights a glowing splint. During the photosynthesis, the light intensity will increase when the rate of photosynthesis increase.