Equinodermos
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Transcript of Equinodermos
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EQUINODERMOS
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Os Equinodermos
Equino Espinho,
Derme Pele
Exclusivamente marinho;
Endoesqueleto;
Simetria pentarradial;
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Os Equinodermos
Sistema digestório completo;
Circulação, respiração e excreção sem orgãos
especializados;
Sistema Ambulacrário
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Os Equinodermos
Reprodução sexuada com sexos separados e
fecundação externa;
Grande capacidade
de regeneração.
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Classes de
Equinodermos
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Asteróides
Estrelas-do-mar;
Corpo estrelado;
5 ou mais braços;
Espinhos pequenos e
fixos.
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Equinóides
Ouriços-do-mar e
bolachas-do-mar;
Corpo quase esférico, com
espinhos grandes e
móveis (ouriços), ou
achatado, com espinhos
curtos e fixos (bolachas-
do-mar).
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Holoturóides
Pepinos-do-mar;
Corpo cilíndrico;
Sem espinhos;
Ausência de braços.
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Crinóides
Lírios-do-mar;
Corpo estrelado,
com braços
ramificados;
sem espinhos.
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Ofiuróides
Serpentes-do-mar;
Corpo estrelado, com disco
central bem delimitado;
Espinhos curtos ou
longos situados nos braços.
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Obrigada!!!
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Atividade de
Identificação
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