Question

What did diploblastic mean

Answer 1

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Diploblastic and Triploblastic Organisation

All animals develop their tissues, organs and organ system from the cells that form the embryonic layers. Based on the number of embryonic layers, animals are classified into two- diploblastic and triploblastic animals.

Diploblastic animals: In diploblastic animals, the cells form two embryonic layers, i.e., an outer layer- ectoderm and an inner layer – endoderm, e.g. Phylum Coelenterata.

Triploblastic animals: In triploblastic animals, cells are arranged in three embryonic layers- ectoderm, endoderm and a middle layer – mesoderm. Animals belong to Phyla Platyhelminthes to Chordata have a triploblastic organisation.