monecious is when it has male and female reproductive organs in the same organism.
their weirdness
Yes.
Gene based phylogenetic studies indicate that annelids and mollusks share a recent common ancestor
have a trochophore
Trochophore.
Trochophore
yes
yes.. animal kingdom include,mammals,reptiles,vertebrates,mollusks,annelids,invertebrates..etc etc
Flatworms, Roundworms, Annelids, Mollusks, and Arthropods
Annelids exhibit bilateral symmetry.
Cnidarians include jellyfish and corals. Cnidarians are less complex than annelids or mollusks because the latter have gills with many layers of tissue.
a scorpion is a Arthropods