In one of the followings, the nervous system consists of a network of neurons present between the ectoderm and endoderm:
Correct answer: D. Hydra
- A. Planaria
- B. Mosquito
- C. Toad
- D. Hydra
Explanation
Hydra's nerve net lies between the outer ectoderm and inner endoderm, allowing stimuli to spread through its body. The other animals have centralized nervous systems rather than this diffuse network.
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