1
Organism without a backbone
2
Organism with a backbone
3
A vertebrate that lives in water as a larva, land as adults
4
Most basic invertebrate
5
A kangaroo is a _________ mammal
6
Descendant of rayfinned fishes with lobed fins
7
Invertebrates that live in damp places on land and breathe using either gills or lungs
8
Has jaws and a flexible skeleton made of cartilage
9
Reptile with no legs
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