Filo cnidaria
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![Page 1: Filo cnidaria](https://reader036.fdocumentos.com/reader036/viewer/2022062313/55733925d8b42a63778b525f/html5/thumbnails/1.jpg)
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Características• Aquáticos• Livres ou sésseis• Predadores• Micro ou macroscópicos• Diblásticos, simetria radial• Cavidade gastrovascular• Parede corpórea formada por epiderme,
gastroderme e mesogléia• 2 formas: pólipo ou medusa• Possuem cnidoblastos com nematocistos
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Classe Hidrozoa
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Características
•Aquáticos•Forma predominante de pólipo•Reprodução sexuada e assexuada•(alternância de gerações)
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Classe Antozoa
![Page 21: Filo cnidaria](https://reader036.fdocumentos.com/reader036/viewer/2022062313/55733925d8b42a63778b525f/html5/thumbnails/21.jpg)
Características
•Marinhos•Forma exclusiva de pólipos•Reprodução assexuada (divisão longitudinal) e sexuada
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Classe Cyfozoa
![Page 24: Filo cnidaria](https://reader036.fdocumentos.com/reader036/viewer/2022062313/55733925d8b42a63778b525f/html5/thumbnails/24.jpg)
Características
•Forma predominante de medusas•Marinhos•Reprodução sexuada e assexuada (alternância de gerações)
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Tipos de Reprodução
A)Assexuada:• Brotamento• Estrobilização
B) Sexuada:• Monóicos ou dióicos; fecundação interna ou
externa; desenvolvimento direto ou indireto.
OBS: metagênese ou alternância de gerações: medusa (sexuada); pólipo (assexuada)