| Diploblastic | Triploblastic |
|---|---|
| $(1)$ Cells are arranged in two germinal layers,i.e.,ectoderm and endoderm. | $(1)$ Cells are arranged in three germinal layers,i.e.,ectoderm,mesoderm,and endoderm. |
| $(2)$ This is known as diploblastic organization. | $(2)$ This is known as triploblastic organization. |
| $(3)$ An undifferentiated,non-cellular layer called mesoglea is present between the ectoderm and endoderm. | $(3)$ $A$ cellular layer called mesoderm is present between the ectoderm and endoderm. |
| $(4)$ Examples include Phylum $Coelenterata$ (Cnidaria). | $(4)$ Examples include Phylum $Platyhelminthes$ to $Chordata$. |
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