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    Biology
  3. Study Set
    Principles of Life
  4. Exam
    Exam 23: Animal Origins and Diversity
  5. Question
    The Pharyngeal Gill Slits of Chordate Ancestors Functioned as Sites
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The Pharyngeal Gill Slits of Chordate Ancestors Functioned as Sites

Question 3

Question 3

Multiple Choice

The pharyngeal gill slits of chordate ancestors functioned as sites for


A) uptake of oxygen only.
B) both uptake of oxygen and release of carbon dioxide.
C) release of carbon dioxide only.
D) removal of small prey from the water.
E) forcible expulsion of water to move the animal.

Correct Answer:

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