Based on the Complexity of Their Nervous Systems, Which Two

question 43

Multiple Choice

Based on the complexity of their nervous systems, which two organisms have a more recent common ancestor?

• A)squids and frogs
• B)squids and flatworms
• C)sea anemones and flatworms
• D)flatworms and frogs

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Definitions:

Nonaromatic

Organic compounds that do not meet the criteria for aromaticity, lacking the special stability of aromatic systems.

Pyridine

A basic nitrogen-containing heterocyclic aromatic compound, resembling benzene but with one CH group replaced by a nitrogen atom.

Pyrrole

An aromatic heterocyclic organic compound, consisting of a five-membered ring with one nitrogen atom. It is the foundation for many natural and synthetic compounds including pharmaceuticals.

Aromatic

Refers to a class of compounds that contain one or more planar ring structures with delocalized π-electron systems, leading to stable and often fragrant molecules.