Question
Write short note on protochordates.
Write short note on protochordates.
Protochordata is one of the groups of phylum chordata. Protochordata constitutes the marine, small, primitive, or lower chordates. The members of protochordates lack a head, skull or cranium, vertebral column and brain. About 2000 species are found in this group. This is further divided into three subphylum: Hemichordata (e.g. Balanoglossus ), Urochordata (e.g. Herdmania) and Cephalochordata (e.g. Branchiostoma) based on the position of notochord.
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