Write an essay on protochordate
Answers
Answered by
0
Protochordate is an informal category of organisms to describe the invertebrates that are closely related to vertebrates.
Examples of protochordates are Balanoglossus, Saccoglossus, Herdmania, Amphioxus, Doliolum, Salpa etc. Phylum chordata has 4 sub phylums. They are Hemichordata, Cephalochordata, Urochordata and Vertebrata. First three are protochordates.Characteristics of Protochordata
The Central Nervous System or CNS of protochordata is single, hollow, and dorsal, which is completely unlike the CNS of non-Chordata organisms. ... The heart of these organisms is ventral with a closed circulatory system. The gut in protochordata is ventral to the nerve cord.
Similar questions