Multiple Choice
To increase the effectiveness of exchange surfaces in the lungs and in the intestines, evolutionary pressures have
A) increased the surface area available for exchange.
B) increased the thickness of these linings.
C) increased the number of cell layers.
D) decreased the metabolic rate of the cells in these linings.
E) increased the volume of the cells in these linings.
Correct Answer:
Verified
Correct Answer:
Verified
Q16: All animals, whether large or small, have<br>A)an
Q17: Endothermy<br>A)is a characteristic of most animals.<br>B)involves production
Q18: An exchange surface is in direct contact
Q19: As body size increases among birds,<br>A)the body's
Q20: The body's automatic tendency to maintain a
Q22: During its months-long hibernation, the body temperature
Q24: Panting by an overheated dog is an
Q25: A specialized function shared by the many
Q26: An animal's inputs of energy and materials
Q34: With its abundance of collagenous fibers, cartilage