What is a hydra?
A hydra is a type of animal. (1)
Hydra are freshwater animals that belong to the phylum Cnidara. (1)
What do hydra contain?
They have a simple body plan. (1)
What do hydra NOT contain?
an organ system (1)
Resources
1. https://chat.openai.com/chat ‘What animals do not have organs?’ 2/23/23
