Filamentous algae consist of chains of cells. An example is Spirogyra, named for its large, spiral-shaped chloroplast (C). This alga reproduces sexually by a type of conjugation during which haploid filaments align and adjacent cells (gametes – G) combine to form diploid zygotes (Z).
Fungus like Protists
Organisms in this group possess cellulose cell walls surrounding diploid cells; reproduction involves flagellated zoospores.
This is one of the water molds, a common type of fungus in this group, which also contains the infamous potato blight. You may be able to see sporangia or zoospores, but the most obvious identifying feature is the spherical oogonium (O), with rather large gametes inside and finger-like antheridia (A) curled around it; hyphae (H) are also present.