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Animals having calcareous endoskeleton with organ-system level of organization, completely marine are(a) Arthropoda(b) Mollusca(c) Hemichordates(d) Echinodermates
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An endoskeleton is an internal support structure of an animal, composed of mineralized tissue. Calcareous means containing calcium carbonate, which is a common substance found in rocks and the shells of marine organisms. An organ-system level of organization means Show more…
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Which phylum is characterized by animals that have a segmented body? (A) Cnidaria (C) Arthropoda (B) Platyhelminthes (D) Mollusca
. Which phylum is characterized by animals that have a segmented body? \begin{equation}\begin{array}{ll}{\text { (A) Cnidaria }} & {\text { (C) Arthropoda }} \\ {\text { (B) Platyhelminthes }} & {\text { (D) Mollusca }}\end{array}\end{equation}
Which phylum is characterized by animals that have a segmented body? a. Cnidaria b. Platyhelminthes c. Arthropoda d. Mollusca
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