Cnidarians are an example of organisms that possess a simple type of what system, used for sensing touch?
- Correct Answer: bacterial system
- circulatory system
- lymphatic system
- nervous system
Explanation: Cnidarians have a simple nervous system. It consists of a net of nerves that can sense touch. You can see a sketch of the nerve net in a hydra in Figure below . Some cnidarians also have other sensory structures. For example, jellyfish have light-sensing structures and gravity-sensing structures.
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