Compare mosses and algae.

Algae are a large group of organisms (protoctistans) of high biological importance. They are often photosynthetic eukaryotes that live in water. Algae can be found in both sea and fresh water. The organs of the algae lack stems, leaves or roots. Therefore, their body is called thallus. Algae are grouped into different types based on the type of their photosynthetic pigments.

Mosses are poorly adapted to life on land. They are confined to wet, shady areas. These plants are only a few centimeters long. There is an alternation of generations where the gametophyte dominates. The leaves are arranged in a spiral around the stem in three rows. The gametophyte is anchored to the ground by rhizoids. These rhizoids are multicellular. The sporophyte grows associated with the female gametophyte. The sporophyte is partially dependent on the female gametophyte. The spread of the dispute is carried out by a complex mechanism.