The characteristics that are common to all are the following-
-Embryos with a blastula stage
-Multicellularity
-Embryos with two or more germ layers
-Heterotrophic
Though embryos have blastula stage but the event of gastrulation is absent in them,they don't have true tissues and are diploblastic.All the organisms of kingdom animalia are multicellular and heterotrophic. Notochord and vertebrae are found in chordates.
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Required information Pull It Together - Chapter 17 Study the concept map and then answer the...
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