Question

first diploblastic animal​

Answer 1

Answer:

Diploblastic organisms are organisms which develop from such a blastula, and include cnidaria and ctenophora, formerly grouped together in the phylum Coelenterata, but later understanding of their differences resulted in their being placed in separate phyla. The endoderm allows them to develop true tissue.

Answer 2

Answer:

Cnidaria and Ctenophora are considered as diploblastic. Jellyfish, comb jellies, corals and sea anemones are the examples of diploblastic animals. Triploblastic organisms form all three primary germ layers – endoderm, ectoderm and mesoderm – during the gastrulation of the blastula.