Question
Sat November 03, 2012 By: Amithjose
 

On the basis of origin of mouth, animals have been categorized into prostomia and metazoa deuterostomia and protozoa prostomia and duterostomia protozoa and metazoa

Expert Reply
Sun November 04, 2012
On the basis of origin of mouth, animals have been categorized into:
  • Protostomia (mouth arising from or near the blastopore of gastrula) and
  • Deuterostomia (mouth arising anteriorly at some distance from the blastopore)
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