OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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vertebrae
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bony plates
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odonata.
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isopods.
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Detailed explanation-1: -Echinoderms have a skeleton composed of numerous plates of mineral calcium carbonate (calcite).
Detailed explanation-2: -The endoskeleton of echinoderms is composed of plates, known as ossicles, that are formed from networks of calcium carbonate crystals called the stereom.
Detailed explanation-3: -Skin and skeleton Echinoderms have a mesodermal skeleton in the dermis, composed of calcite-based plates known as ossicles.
Detailed explanation-4: -Echinoderms possess a unique internal skeleton (or endoskeleton) composed of thousands to millions of calcium carbonate components known as ossicles. Similar to a complicated 3-D puzzle, these pieces are infused with tissue and covered by an epidermis, or skin like covering.