Question

Why colem is absent in diploblastic organism?

Answer 1

However in diploblastic animals, only the ectoderm and endoderm are present. The true body cavity or coelom originates from the mesoderm and since this layer is absent in diploblastic animals, they lack coelom.

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Answer 2

Answer:

In diploblastic animals, only the ectoderm and endoderm are present. The true body cavity or coelom originates from the mesoderm and since this layer is absent in diploblastic animals, they lack coelom.