Cnidarian (Noun)
Meaning
Radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms.
Classification
Nouns denoting animals.
Examples
- Cnidarians are simple multicellular animals that have been present on Earth for over 650 million years.
- The cnidarian's stinging cells, called cnidocytes, are used to capture prey and defend against predators.
- Jellyfish, corals, and sea anemones are all examples of cnidarians that can be found in oceans worldwide.
- Cnidarians have a unique body structure that is radially symmetrical, meaning their bodies are organized around a central axis.
- The two main forms of cnidarians are the polyp and the medusa, each with distinct characteristics and functions.