Invertebrates
Phylum Mollusca
Class Gastropoda
Snail
Freshwater Mussels
Invertebrates
Phylum Annelida
Class Oligochaeta
Earthworm and Oligochaete worms
Vertebrate
Phylum Chordata
Class Osteichthyes
Eel
Angelfish
Vertebrate
Phylum Chordata
Class Chondrichthyes
Shark
Vertebrate
Phylum Chordata
Class Reptilia
Turtle
Nile Crocodile
Defining Characteristics of Phyla and Classes:
Phylum Cnidaria: They are carnivorous, have two layers of tissues, and
their tentacles bear stinging nematocysts. They also have a gastrovascular
cavity.
Phylum Mollusca:They are soft bodied, have a hard shell, and a muscular
foot.
Phylum Annelida:They are segmented by internal parts. They have a
digestive system with two openings. They have a closed circulatory system.
Phylum Chordata (Chondrichthyes): They have jaws, fins, an endoskeleton,
gill slits and scales with spines. They have a two chambered heart and the
males have internal fertilization.
Phylum Chordata (Osteichthyes): They have an endoskeleton, a respiratory
system, a swim bladder, and paired fins.
Phylum Chordata (Reptilia): They have scale covered skins, they are
ectothermic, have a three chambered heart, and they have internal fertilization.
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