Invertebrates: Animals Without Backbones
Definition
Invertebrates are animals characterized by the absence of a spinal column or vertebral column (backbone).
Characteristics
Invertebrates encompass a diverse group of animals that exhibit a wide range of sizes, habitats, and adaptations. They lack internal skeletal support and rely on other structures, such as exoskeletons (external shells) or hydrostatic skeletons (fluid-filled cavities), for support and protection.
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