Examlex
____________________ are distinct, highly organized structures that perform specialized functions within the cell.
Tissue Layers
Various layers of cells in an organism that have specific functions and form organs and other body structures.
Cnidarians
A phylum of aquatic invertebrate animals that includes jellyfish, corals, and sea anemones, characterized by their radial symmetry and stinging cells.
Spicules
Small, pointed structures made of silica or calcium carbonate serving as a skeletal element in sponges and other invertebrates.
Flagella
Long, slender appendages that protrude from the cell body of some bacteria, protozoa, and spermatozoa, used for locomotion.
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