REINO METAZOA

CARACTERÍSTICAS GERAIS DOS METAZOA:

1.Multicelularidade ------------------------> 2. Cooperação celular
                                                                    3. Colágeno


  Protoctista -----------------> Porífero
                                              (Metazoa)

4. Heterotrofia por digestão --------> digestão extracelular (porífero)

                                             --------> digestão intracelular (todos os demais)
                                                                                              cnidários
                                                                                              platelmintos
                                                                                              nematóides
                                                                                              anelídeos
                                                                                              moluscos
                                                                                              artrópodes
                                                                                              equinodermos
                                                                                              cordados --- peixes
                                                                                                                  anfíbios
                                                                                                                  répteis
                                                                                                                  aves
                                                                                                                  mamíferos

5. Eucariotos, sem parede celular.

6. Movimento - tecido especializado no movimento (músculo)

7. Embriologia: estudo do desenvolvimento


Apomorfia dos metazoa : Blástula