Invertebrates Crossword

When using this key you are always selecting from two choices
These animals do not have a backbone
This invertebrate group usually has paired jointed legs, a segmented body and they make up over 85% of all animal species on Earth
The name given to the process of grouping living and non-living things based on similarities or differences in their structural features
The term used to describe a skeleton which is on the outside
An invertebrate animal with 8 tentacles
A spiny five pointed invertebrate which has radial symmetry
The quality of being made up of exactly similar parts facing each other or around an axis
The second largest invertebrate group, found mostly in water, and usually have a soft unsegmented body
A starfish is an example of this invertebrate group
This invertebrate group has tentacles, a hollow soft body and no organs