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The term “Gastropoda” literally means _______________ foot.

Respiratory organs in the phylum Arthropoda includes gills, book lungs and tracheal tubes.

Phylum Platyhelminthes shows diploblastic germ layers.

The phylum Platyhelminthes includes tapeworms which are endoparasites of the small intestines of vertebrates.

Nematodes are limited to only a few habitats, specifically shallow, warm marine habitats.

All of the following animals are mollusks except

In molluscs, the ____________ overlies the visceral mass and is responsible for secreting the shell.

“Protostome” refers to animals whose blastopore develops into a(n)

In Cnidaria, the nervious system is called a nerve _______________.

Nematodes have a tube-within-a -tube body plan .