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As per your syllabus, which phylum has SPINY skinned animals with internal calcareous support — e.g. starfish, sea urchins?

AAnnelida
BCnidaria
CEchinodermata
DMollusca
Answer & Solution
Correct answer: C. Echinodermata
As per your syllabus, Echinodermata (Greek 'echino' = spiny + 'derma' = skin) = starfish/sea urchins with internal calcium support.
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