Multiple choice Which one of the following is a red algae? Polysiphonia Fucus Oedogonium Vovox Reveal answer Fill a bubble to check yourself A Correct answer Explanation Polysiphonia is a red algae (Rhodophyta) characterized by red pigments phycoerythrin and phycocyanin. Fucus is a brown algae, Oedogonium is a green algae, and Volvox (misspelled as Vovox) is also a green algae.