Examlex
Erosion is the process of __________ rock fragments.
Cnidarians
Phylum of animals that have stinging cells called cnidocytes, two tissue layers, and radial symmetry; include hydras and jellyfish.
Medusa
A free-swimming or floating stage in the life cycle of some cnidarians, typically having a bell-shaped body and tentacles.
Gastrovascular Cavity
A central digestive cavity with a single opening that functions as both mouth and anus; characteristic of cnidarians and flatworms.
Cnidarians
A diverse group of aquatic animals that includes corals, jellyfish, sea anemones, and hydras, characterized by their radial symmetry and cnidocytes, special cells used for capturing prey.
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