What structural features were formed in chordates during evolution?
| May 30, 2020 | Education
1) There was an internal axial skeleton – a chord or spine,
2) the nervous system in the form of a tube is located on the dorsal side of the body,
3) gill slits appeared in the digestive tube.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.