Question

1. which phylum does trichoplax adhaerens belong in?

cnidaria
porifera
platyhelminthes
placozoa

Explanation:

Trichoplax adhaerens is the only known species in the phylum Placozoa. Cnidaria includes organisms like jellyfish, Porifera includes sponges, and Platyhelminthes includes flatworms, none of which Trichoplax adhaerens belongs to.

Answer:

D. Placozoa