||From previous classes and exposure to plants, we know that the process of photosynthesis is characteristic of plants, although not unique, and we know that plants contain chloroplasts, chlorophyll, and cellulose. Furthermore, we know that the trunks of trees may have cankers, or cracks, which may indicate information as to the health of the trees. Moreover, we know that the exposure of roots can indicate damage to the tree, and the presence of shoots indicates that the tree is likely suffering from stress.
We are curious to learn more about the role of sunlight exposure in a tree’s health. Perhaps sunlight dictates the presence of moss, bacteria/pest, and more. Furthermore, we are interested in the different types of insect damage specifically on the leaves that may impact a plant’s health. And lastly, we are concerned about different types of fungal damage to a plant especially at the trunk and roots.
||What are the effects of varying levels of sunlight on leaf health as measured by the area of yellowing on the leaves?
||The trees that are exposed to greater levels of sunlight will most likely have more yellowing (greater area of yellowing) on the leaves by the end of the experiment. The yellowing represents damage, therefore the tree more exposed to solar radiation will be more damaged (less healthy).
||Refer to files. The file is titled "Group 2_Experimental Design".
||High School Students (Grades 9,10,11,12)
||California Academy of Mathematics and Science