Which among the following lacks a nervous system
Correct answer: D. Sponge
- A. Flat worms
- B. Annelida
- C. Cnidaria
- D. Sponge
Explanation
Sponges are the only multicellular animals without a nervous system. They do not have any nerve cells or sensory cells. However, touch or pressure to the outside of a sponge will cause a local contraction of its body.
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