Multiple Choice
Only ______ have a lung designed so that air can flow through them in one direction.
A) a few fish
B) amphibians
C) birds
D) mammals
E) insects
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q20: Most of the cellular component of blood
Q21: The alternate name for the mitral valve
Q22: Which of the following terms refers to
Q23: If an animal has an open circulatory
Q24: Which of the following is not involved
Q26: The ancestral lung of fish has developed
Q27: As a fish forces water across its
Q28: In insects, oxygen passes from the _
Q29: The most important function of the globin
Q30: What is the hormone that stimulates the