The chart shows characteristics of four different groups of invertebrate animals.
Animal
1
2
Characteristics
Has a centralized body cavity,
uses pores and specialized cells
to obtain oxygen from water
Has a soft body and may have a
shel; uses ils or lungs for
obtaining oxygen
Has arms that extend from the
middle of the body, uses tube
feet for obtaining oxygen
Has a segmented body, obtains
oxygen through skin
3
Which set of characteristics describes an echinoderm?
Animal 1
Animal 2
Animal 3
Animal 4