Classify the algae Volvox, Ulva, and Chlamydomonas based on their cellularity. unicellular: Volvox colonial: Chlamydomonas multicellular: Ulva unicellular: Ulva colonial: Chlamydomonas multicellular: Volvox unicellular: Chlamydomonas colonial: Volvox multicellular: Ulva