Animals: Invertebrates and Vertebrates Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 6 to 15 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
Most basic invertebrate
Invertebrate with a brain
Example of a craniate
Came before sharks and has a vertebral column
Has jaws and a flexible skeleton made of cartilage
Fishes with lungs and skeletal rays
Descendant of rayfinned fishes with lobed fins
Organism with a backbone
Organism without a backbone
Class of organisms with cartilage skeletons
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