Question

A scientist wanted to test the effects of light intensity on the rate of photosynthesis. She placed an aquatic plant called Elodea in a test tube filled with water. The test tube was placed in abeaker containing water to maintain a constant temperature during the experiment. The scientist then put a lamp at a set distance and measured the amount of bubbles produced by theplant over 1 minute. She then moved the light source closer and conducted the experiment again. The data the scientist obtained from her experiment is recorded in the table below.Which of the following statements is a valid conclusion for her experiment?A.The lower the light intensity, the higher the rate of photosynthesis.B.The higher the light intensity, the lower the rate of photosynthesis.C.The light intensity does not have an effect on the rate of photosynthesis.D.The higher the light intensity, the higher the rate of photosynthesis.

Answer 1

The effect of light intensity on the rate of photosynthesis is well concluded by the result of the experiment. As the light intensity increases, the rate of photosynthesis also increases. This will happen because there is more energy provided in the process. The experiment shows that as the distance of the light goes nearer, the more the bubbles is produced. The bubbles represents the oxygen produced in the process of photosynthesis.

Answer - Option D. The higher the light intensity, the higher the rate of photosynthesis.