Animals like starfish have small groups of neurons in each arm connected to a ring of neurons in the centre. This type of nervous system is called _.
Correct answer: C. Diffuse nervous system
- A. Centralized nervous system
- B. Partially centralized nervous system
- C. Diffuse nervous system
- D. Partially diffuse nervous system
Explanation
The diffuse nervous system is the most primitive nervous system. In the diffuse system, nerve cells are distributed throughout the organism, usually beneath the outer epidermal layer.
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