Open Question
Compare and contrast the somatic nervous system and autonomic nervous system.
45. Nervous System
Central and Peripheral Nervous System
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Which would be present in an animal with a nerve net?
A
Nerves
B
Ganglia
C
Cephalization
D
Centralization
E
Radial symmetry
Verified step by step guidance1
Understand the concept of a nerve net: A nerve net is a simple network of neurons found in some invertebrates, such as cnidarians (e.g., jellyfish). It is characterized by a diffuse arrangement of nerve cells, rather than a centralized nervous system.
Identify the characteristics of animals with a nerve net: These animals typically have a simple body plan and lack complex structures like a brain or spinal cord. They do not have centralized nervous systems or ganglia.
Consider the concept of radial symmetry: Radial symmetry is a body plan in which body parts are arranged around a central axis. This is common in animals with a nerve net, as it allows them to interact with their environment from all directions equally.
Evaluate the options: Nerves, ganglia, cephalization, and centralization are features associated with more complex nervous systems. Animals with a nerve net do not have these features.
Conclude that radial symmetry is the correct answer: Animals with a nerve net, such as jellyfish, exhibit radial symmetry, which aligns with their simple nervous system structure.
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