Question

define tribloblastic​

Answer 1

Those organisms which having three germs layers.

Answer 2

Embryonic Development of the Mouth. Bilaterally symmetrical, tribloblastic eucoelomates can be further divided into two groups based on differences in their early embryonic development. ... The word protostome comes from the Greek word meaning “mouth first. ” The protostomes include arthropods, mollusks, and annelids.

I hope it will help you