Not all organisms have three germ layers. The phyla that have fewer than three germ layers are Porifera (absent germ layer) and Cnidaria (2 germ layers).
Do all organisms have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers?
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Academic.Tips. (2021) 'Do all organisms have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers'. 5 November.
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Academic.Tips. (2021, November 5). Do all organisms have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers? https://academic.tips/question/do-all-organisms-have-3-germ-layers-endoderm-ectoderm-and-mesoderm-if-not-which-phyla-have-fewer-than-three-germ-layers/
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Academic.Tips. 2021. "Do all organisms have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers?" November 5, 2021. https://academic.tips/question/do-all-organisms-have-3-germ-layers-endoderm-ectoderm-and-mesoderm-if-not-which-phyla-have-fewer-than-three-germ-layers/.
1. Academic.Tips. "Do all organisms have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers?" November 5, 2021. https://academic.tips/question/do-all-organisms-have-3-germ-layers-endoderm-ectoderm-and-mesoderm-if-not-which-phyla-have-fewer-than-three-germ-layers/.
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Academic.Tips. "Do all organisms have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers?" November 5, 2021. https://academic.tips/question/do-all-organisms-have-3-germ-layers-endoderm-ectoderm-and-mesoderm-if-not-which-phyla-have-fewer-than-three-germ-layers/.
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"Do all organisms have 3 germ layers (endoderm, ectoderm and mesoderm)? If not, which Phyla have fewer than three germ layers?" Academic.Tips, 5 Nov. 2021, academic.tips/question/do-all-organisms-have-3-germ-layers-endoderm-ectoderm-and-mesoderm-if-not-which-phyla-have-fewer-than-three-germ-layers/.
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