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Zoo1 Chap.1 Métazoaires

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Arnaud VH

on 30 August 2018

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Transcript of Zoo1 Chap.1 Métazoaires

Les Métazoaires
Euplectella aspergillum
éponge lyre
Chondrocladia lyra
2. Plan d'organisation primitif : un sac diploblastique
1. Organisation de l'arbre des Métazoaires
3. L'apparition d'un 3ème feuillet et ses conséquences
Cténaires (ou Cténophores)
Symétrie bilatérale
2.3 Cnidaires
2.2 Eponges
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