A) Mouth arises some distance away from blastopore (Deuterostomial)
B) Mouth arises from blastopore or anterior margin of blastopore (Protostomial)
C) Presence of pharyngeal gill slits
D) Presence of notochord
Correct Answer: A
Solution :
In Echinodermates and chordates, the anus of the digestive tract develops first in the embryo and the mouth is formed later. The animals of these two phylum which possess this body plan are called deuterostomes.
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