What Is the Likely Phylogenetic Explanation for the Crossing of Food

question 23

Multiple Choice

What is the likely phylogenetic explanation for the crossing of food and air pathways in humans?

• A) A connection between the two previously separated pathways evolved to allow for an alternative air intake in case of a "stuffy nose."
• B) Lungs evolved as an extension of the esophagus rather than as a separate organ system.
• C) Access to odor receptors in the nose allowed for assessing food quality before swallowing.
• D) A connection between both pathways allowed for a more efficient swallowing mechanism.

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