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ReneCnidarians typically exhibit radial symmetry, meaning they are shaped like a wheel spoke with multiple identical parts radiating out from a central point. This symmetry allows them to respond to stimuli from all directions equally and efficiently capture prey in their aquatic environment.
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What is one way that cnidarians and mollusks differ?
Cnidarians have radial symmetry and specialized stinging cells called cnidocytes, while mollusks typically have bilateral symmetry and a muscular foot for movement.
What is enidarians?
Cnidarians are a phylum of invertebrate animals that includes jellyfish, corals, and sea anemones. They are characterized by their radial symmetry and specialized stinging cells called cnidocytes, which they use to capture prey. Cnidarians are found in marine environments around the world.
What are the main characteristics of sponges cnidarians and worms?
Sponges are invertebrate animals that usually have no body symmetry and never have tissues or organs. Cnidarians use stinging cells to capture food and defend themselves. Flatworms are flat and as soft as jelly. Unlike cnidarians or flatworms, roundworms have a digestive system that is like a tube, open at both ends. Earthworms and other segmented worms have bodies made up of many linked sections called segments.
Are cnidarians arthropods?
Cnidarians and Sponges are invertebrates
What are the characteristics of cnidarians?
Cnidarians are characterized by their radial symmetry, presence of stinging cells called cnidocytes, and a simple nerve net. They have a body composed of two cell layers and a central gastrovascular cavity with a single opening that serves as both a mouth and an anus. Cnidarians include jellyfish, corals, hydroids, and sea anemones.
