Some species of algae that have heteromorphic alternation of generation were originally thought to be different algae since the gametophyte sporophyte stages look completely different. Derbesia, marina a green algae is one example of this. Derbesia has a multicellular filamentous sporophyte stage, while the multicellular gametophyte is bulbous, with the common name Sea Peals Below is a sketch of the and sporophyte stage (lots of artistic license and not to scale). On the lines below drawings please write in if this stage is haploid or diploid. Please fill in the diagram the showing and labeling gametes, spores, fertilization, zygotes, meiosis and mitosis.