random
structure
100

Does it have planktonic larvae?

yes

100

How many plates do chitons have?

8

200

What kind of reproduction do chitons use?

External reproduction 

200

What symmetry do chitons have?

Bilateral

300

What do chitons eat?

Algae, bacteria, diatoms 

300

What unique place do chitons have eyes?

their shell
400

What 3 animals do chitons have a symbiotic relationship with?

Algae, crustaceans, snails

400

What kind of body cavity do chitons have?

ceolomates

500

How long have chitons been around?

500 million years

500

What are their gills called?

ctenidia