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Stammbaum der Metazoa

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Sharkresearch
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Last updated: December 4, 2025
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First submittedDecember 4, 2025
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Average score27.3%
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Hint
Answer
1
Metazoa (Vielzeller)
1.1
Porifera (Schwämme)
Beschreibung 1.1
sind in zwei Schichten Pinacoderm und Choanoderm mit Choanozyten (Kragengeißelzellen) aufgebaut
1.2
Eumetazoa (echte Viellzeller)
Hint
Answer
Beschreibung 1.2
echte Epithelien, die zunächst von den 2 Keimblättern Ektoderm (Epidermis) und Entoderm (Gastrodermis) gebildet werden
1.2.1
Cnidaria + Ctenophora
Beschreibung 1.2.1
diploblastischen Organisation (besitzen nur die 2 Keimblättern)
1.2.2
Bilateria
Hint
Answer
Beschreibung 1.2.2 a
triploblastische Organisation mit Mesoderm (3. Keimblatt)
Beschreibung 1.2.2 b
Bilateralsymmetrie mit Vorne-Hinten-Polarität
Beschreibung 1.2.2 c
Konzentration des zentralen Nervensystems im Vorderende
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