Biology · Phylum Echinodermata
What is absent or poorly developed in the nervous system of Phylum Echinodermata?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Nerve ring
- 2Radial nerves
- 3Brain (Cerebral ganglia)✓
- 4Sensory cells
Correct answer
Brain (Cerebral ganglia)
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