||We know that plants need soil, water, and light to grow from our experiences outside of school. In class we discovered that plants photosynthesize and preform cellular respiration. Where do plants get their mass from?
||Do different plants photosynthesize at different rates?
||We think that plants do photosynthesize at different rates because of their size. The bigger the plant the more light it can absorb, then is photosynthesizes at a faster rate than smaller plants.
||We put 3 grams of three different kinds of plants (Submerged, terrestrial, and floating) in Phenol Red and put them under a light for 24 hours to see which would photosynthesize at the highest rate.
||We found that the Elodea (the submerged plant) performed photosynthesis at the highest rate. The Phenol Red with the spinach (the terrestrial plant) stayed the same and surprisingly, the the Phenol Red with the Duckweed (the floating plant) turned yellow. We believe the reason for this is because it performed cell respiration. The Elodea photosynthesized the most because in nature it is always underwater, causing it to be used to wet conditions.
||High School Students (Grades 9,10,11,12)
||Bristol High School