General structure of spinal animals features

Аннотация

Vertebrates- (Vertebrata or Craniata) are a subspecies of chordates. The number of species is less than that of invertebrates; however, they play an important role in the modern biosphere. They have a highly structured, changeable habitat. They live in different layers of the ocean, in high mountains, deserts and other places. In the evolution of these animals, it is observed that their structure develops according to a single general plan. Such development has led to the emergence of forms that have improved in terms of morphological, biochemical and physiological properties, behavior and mental activity.