Aquatic plant growing fully submerged in Lake Wahakari. Not photographed in situ.
An aquatic plant that grows under water. Not photographed in situ
The Charophyta are a division of green algae, that includes the closest relatives of the embryophyte plants. In some groups, such as conjugating green algae, flagellate cells do not occur. The latter group does engage in sexual reproduction, and motility does not involve flagella, since they are totally lacking. Flagellate cells in the form of sperm are found in stoneworts (Charales) and Coleochaetales.