Sexual reproduction occurs in most species of algae. In these species the algae reproduce asexually for generations until there is a change in environmental conditions; then the algae reproduce sexually. Other types of algae alternate in how they reproduce. The algae that reproduce sexually will latter reproduce asexually. All algae reproduce asexually. Unicellular algae divide by mitosis and cytokinesis. Multicellular algae that contain thalli and filaments can fragment. Each new piece can form a thallus and a filament.
Was this article helpful?