Invertebrate Crossword

A structure that extends from an anthropod's body, also a character from mythology!
Many invertebrates have this central body part.
Most invertebrates do not have this back end body part.
Some invertebrates have this, such as mollusks.
Many kinds of invertebrates have this body part.
This can very a lot between different species of invertebrates.
Almost all of these kinds of animals are invertebrates.
Some invertebrates come together to form these.
The biggest known invertebrate.
Most invertebrates undergo this process.
Invertebrates don't have these!
Invertebrate cells do NOT have this organelle.
A group of invertebrates including earthworms and leeches.
A grouping including most marine invertebrates.
An Invertebrate NOT made of tissues.
A Group of invertebrates including 80% of animal species.
Most invertebrates are this word, which means they are the same on both sides.
Most invertebrate's bodies are made up of these.
Another word for making your own food. Invertebrates do this.
Invertebrates don't have this part of the body.