Protostome characteristics generally include which of the following?
A) a mouth that develops secondarily, and far away from the blastopore
B) radial body symmetry
C) radial cleavage
D) determinate cleavage
E) absence of a body cavity

Question

Quizplus · Accepted Answer

Protostomes have determinate cleavage, meaning the fate of each cell is already determined early on in development.

Answer: E
 Protostomes have a distinct body cavity called a coelom, which is lined with mesoderm. The absence of a body cavity is a characteristic of acoelomates.

Protostome Characteristics Generally Include Which of the Following