A phyloGENETIC tree is not the same thing as a taxonomic tree, which is what Cal described. rRNA and molecular studies are used in phylogenetics to determine relations between species.
1 As the light intensity increases, the rate of photosynthesis increases. 2  However, the rate will not increase beyond a certain level of light intensity. 3  At high light intensities the rate becomes constant, even with further increases in light intensity, there are no increases in the rate.
The primary event in photosynthesis. After a photon of light of wavelength â680 nm is absorbed by one of the many chlorophyll molecules in one of the light-harvesting complexes (LHCs) of an antenna (only one is shown), some of the absorbed energy