the difference between a protostome and a deuterostome is that
a) a deuterostome only has two germ layers
b) a protostome always develops into an acoelomate
c) the blastopore in a deuterostome develops into the animals anus
d) only protostomes can develop into radially symmetrical adults

Question

the difference between a protostome and a deuterostome is that 
a) a deuterostome only has two germ layers 
b) a protostome always develops into an acoelomate 
c) the blastopore in a deuterostome develops into the animals anus
d) only protostomes can develop into radially symmetrical adults

petiteme · Answer

In deuterostomes, the first opening (the blastopore) becomes the anus.