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Worms and insects are both vertebrates.
In the name
the first word in the name refers to the species.
Turbellaria is a class of parasitic flatworms.
An order is a broad taxonomic category composed of similar phyla.
Some sponges live on lake bottoms, while others are found on the seafloor.
Most sponges have two layers of cells.
Planaria are parasitic roundworms.
An organism may have different common names that vary from area to area and language to language.
Organisms that spend their entire adult lives attached to one spot are said to be
A person who has trichinosis likely contracted it from
eating undercooked meat containing
A group of phylums is called a(n)
In diagram 23-2, collar cells that catch the spongge's food are located at
In diagram 23-2, spicules are located at
The only phylum to have a gastrovascular cavity is the