Multiple choice Which of the following belong to the same class of algae? Chara, Fucus and Polysiphonia Volvox, Chlamydomonas and Spirogyra Porphyra, Ectocarpus and Ulothrix Sargassum, Laminaria and Gracilaria Dictyota, Ectocarpus and Gelidium Reveal answer Fill a bubble to check yourself B Correct answer Explanation All of them belong to the same class, i.e. green algae.