According colony members with larger “light reception” areas together

According to
Encyclopedia Britannica, the Volvox
genus contains about 20 different species (2015). These autotrophic algae live
in fresh water where they form “spherical or oval hollow colonies” using
cytoplasmic filaments to join together “500 to 60,000 cells” (2015). Each
somatic cell has two flagella and one chloroplast (2015). These microorganisms
engage in “phototaxis” by grouping the colony members with larger “light
reception” areas together to form an area specifically targeted for
photosynthesis (2015). Most Volvox
species reproduce asexually and sexually with some switching “primary modes of
reproduction” (2015).