Chemophyta

Chemophyta (meaning 'chemical plant') is the clade containing all chemotrophic multicellular organisms.

Chemophyte evolves from chemotrophic microbes that live on the water surface, which over time, like many organism lineages within this planet, form a colony which eventually causing them to become a multicellular organism.

They thrive in an environment with high atmospheric hydrogen sulfide concentration and do not require other sources of energy or nutrients.

Anatomy
Chemophytes have a body with no symmetry. From the central part of the body grow several branched appendages to help in floating on the water surface and to increase the surface of gas exchanges and water intake.

Mesohyl
Though very small in diameter, chemophytes have a mesohyl network with branches in each appendage used for transportation of substances within the body.

Nervous System and Senses
Unlike the bulbozoons lineage, chemophytes do not possess any kind of nervous system.

Behavior
Chemophytes do not show any sign of complex behavior. Only performing their life routines constantly.

Reproduction
Also unlike bulbozoons, chemophytes didn't evolve any form of a sexual organ. They reproduce through asexual means such as fragmentation and budding.

Competitors and Predators
Similar to autotrophic organisms on earth, chemophytes competes with other of their kinds and other autotrophs of the same niche, being the chemotrophic microbes. However, they are at advantage because of them floating on the water surface and their larger size. They are sometimes eaten by hexapterids though this is not much of a problem as they are capable of regeneration.

Diet
Being an autotroph, chemophytes do not eat but gaining energy through the chemosynthesis process.

Distribution and Habitats
Chemophytes can be found on the water surface, with a large amount population being in the southern hemisphere where the concentration of atmospheric hydrogen sulfide is high. However, sometimes the water current carries them up to the northern hemisphere. Though still capable of surviving, the conditions are not as suitable as the southern hemisphere, causing a reduction in the reproduction rate.

Euchemophyte
Euchemophyta is the clade containing chemophytes that retain most, if not all, traits of their ancestor. These traits include asymmetrical body, using only chemosynthesis, and the simple mesohyl system. However, they develop one major change, an ability to sexually reproduce, having an elevated male gametangium and a wide female gametangium on the base. They also have thicker ectoderm to retain water to prevent desiccation as they are now living on beaches instead of floating around in the ocean, as well as longer appendages that penetrate the sand to hold themselves against the wave.