Question

The difference between protostomes and deuterostomes is _____.
a. protostomes have only an ectoderm and endodorm
b. protostomes have only a mesoderm
c. protostomes develop a mouth first than an anus
d. protostomes develop an anus first than a mouth

Answer 1

The major difference between protostomes and deuterostomes are how they develop in the early embryo stages. In protostomes the mouth opening is the first to be formed later followed by the anus. In deuterostomes the anus forms first followed by the mouth. This all occurs in the gastrulation stage.

Answer 2

so c?

Answer 3

yes

Answer 4

correct

Answer 5

thanks!