Definition
*Chlamydomonas* is a genus of single-celled green algae commonly found in soil, freshwater, and even snow. These microscopic organisms are characterized by their oval shape, two flagella for movement, and a prominent chloroplast for photosynthesis. *Chlamydomonas* is a model organism for studying various biological processes, including photosynthesis, motility, and cell signaling. Think of it as the workhorse of algal research. It's simple yet incredibly informative.