Which is true of pseudocoelomates?
A. they have no body cavity
B. they lack mesoderm tissues
C. they have a body cavity derived from mesoderm only
D. they have a body cavity derived from mesoderm and endoderm
Answer: D
Which is true of pseudocoelomates?
A. they have no body cavity
B. they lack mesoderm tissues
C. they have a body cavity derived from mesoderm only
D. they have a body cavity derived from mesoderm and endoderm
Answer: D