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A nerve cell that handles information processing in the brain.
Flatworms
A group of invertebrates within the phylum Platyhelminthes, known for their flat, soft bodies.
Water-Vascular System
Of echinoderms, a system of fluid-filled tubes and tube feet that function in locomotion.
Echinoderms
A phylum of marine animals characterized by radial symmetry, a calcareous skeleton, and a water vascular system, includes starfish and sea urchins.
Radial Symmetry
A form of symmetry found in some organisms, where body parts or structures radiate from a central point, allowing for multiple planes of symmetry.
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