What structural features indicate the progressiveness of roundworms in comparison with flatworms?
December 19, 2020 | education
| 1) end-to-end type of intestine;
2) the presence of a primary body cavity (pseudo-target);
3) dioecious;
4) the nervous system, consisting of the periopharyngeal nerve ring and six nerve trunks
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.