Which are the germ layers present in cnidarians? Which tissues of the animal do they originate?

Which are the germ layers present in cnidarians? Which tissues of the animal do they originate?
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These beings present ectoderm and endoderm, two germ layers. Animals with only two germ layers are called diploblastic animals. The ectoderm gives birth to the epidermis and the endoderm originates the covering of the digestive cavity. Image Diversity: germ layers
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