What unique characteristic do all deuterostomes have in common?
A) Adults are bilaterally symmetrical.
B) Embryos have pharyngeal pouches that may or may not form gill slits.
C) All have a spinal column.
D) All have specialized head and tail regions.
E) The pore (blastopore) formed during gastrulation becomes the anus.

Question

Quizplus · Accepted Answer

Deuterostomes are a clade of animals that includes chordates (including humans), echinoderms (such as starfish and sea urchins), and a few other groups. One characteristic that all deuterostomes share is that the pore formed during gastrulation becomes the anus. This contrasts with protostomes, which typically form a mouth from this pore instead.

What Unique Characteristic Do All Deuterostomes Have in Common