PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which animals were the first to develop a nerv net ( like a nervous system)?
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insects
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jellyfish
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sponges
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octopus
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Explanation:
Detailed explanation-1: -The flatworms were the first invertebrates to exhibit bilateral symmetry and also the first to develop a central nervous system with a brain.
Detailed explanation-2: -Jellyfish have no such central place; in fact, they have two nervous systems. A large nerve net controls swimming and a small nerve net controls all other behaviors, including feeding and spasm response (briefly curling into a ball).
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