any one of different chiefly aquatic, eukaryotic, photosynthetic organisms, varying in size from single-celled kinds on huge kelp. Algae had been when considered to be plants but are now categorized independently simply because they lack real roots, stems, leaves, and embryos.
any one of numerous aquatic photosynthetic organisms, whose dimensions varies from one cellular to giant kelps and whose kind is extremely diverse; some are eukaryotic many prokaryotic; includes the seaweeds.
A kind of seaweed; pl. the course of cellular cryptogamic flowers which includes the black, purple, and green seaweeds, as kelp, dulse, sea lettuce, in addition marine and fresh-water confervæ, etc. The algae tend to be primitive chlorophyll-containing primarily aquatic eukaryotic organisms lacking real stems and roots and leaves.
A cryptogam of the course of Algæ.
ancient chlorophyll-containing primarily aquatic eukaryotic organisms lacking true stems and origins and leaves