No need to be an evolutionary biologist to enjoy any of these gifts featuring "The Lineage Of Algae". Algae are a large and diverse group of simple, typically autotrophic organisms, ranging from unicellular to multicellular forms. Algae are considered "simple" because they lack the many distinct organs found in land plants. No matter what you background, featuring educational scientific attitude with this detailed diagram. Note: Endosymbiotic events -- those that have been hypothesized by scientists -- are noted by dotted lines. This diagram represents the most parsimonious way of explaining the three types of endosymbiotic origins of chloroplasts. These types include the endosymbiotic events of cyanobacteria, red algae and green algae, leading to the hypothesis of the supergroups Archaeplastida, Chromalveolata and Cabozoa respectively.