Question

what is protochordata and characteristics​

Answer 1

Answer:

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.

and their characterstics are as follow :

They are simple and aberrant chordates.

The true brain or skull is absent.

The true heart and kidneys are absent.

They lack jaws altogether.

Vertebrate and paired appendages are absent.

Peculiar type of embryonic development is found.

They are all marine and small sized animals.

Answer 2

Answer: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.

➡️ their characterstics are as follow :

1.They are simple and aberrant chordates.

2.The true brain or skull is absent.

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