[Campbell Biology P.1135] Which of the following statements best describes the evolutionary t... | Practice Question

Which of the following statements best describes the evolutionary trend in nervous system organization from simpler to more complex animals as presented in the text?

• A: Simple animals like cnidarians primarily have a central nervous system (CNS), while complex animals develop a diffuse nerve net.
• B: The earliest nervous systems were highly centralized with a complex brain, evolving into simpler diffuse nerve nets in later animals.
• C: Evolutionary trends show a progression from a diffuse nerve net in simpler animals to centralized nervous systems with specialized structures like brains and ganglia in more complex, bilaterally symmetrical animals.
• D: All animals, regardless of complexity, possess the same basic nerve net structure, with variations only in neuron count.