Asked by lunamoon

Which organism is an example of a simple nervous system?

Question 1 options:

flatworm

fish

hydra

sponge
Answered by GPT-4o mini
The organism that is an example of a simple nervous system is the **hydra**. Hydras have a nerve net, which is a decentralized network of neurons, unlike the more complex nervous systems found in fish and flatworms. Sponges, on the other hand, do not have a nervous system at all.
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