Question

define phylogeny and write tje general characters of protochordates
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Answer 1

Explanation:

Protochordate is an informal category of organisms to describe the invertebrates that are closely related to vertebrates.Protochordates are an informal category of animals (i.e.: not a proper taxonomic group), named mainly for convenience to describe invertebrate animals that are closely related to vertebrates. This group is composed of the Phylum Hemichordata and the Subphyla Urochordata and Cephalochordata.