Actual gas exchange occurs through the walls of the ____
a. arteries
b. arterioles
c. capillaries
d. veins
e. venules
ANSWER: c
You might also like to view...
Which tree has needle-shaped leaves that are adaptations for minimizing water loss?
a. cacti b. conifer c. broadleaf evergreen d. deciduous angiosperms e. mesquite
Which of the following is TRUE of all reptiles?
A) They have a heart with either three or four chambers. B) They have four well-developed limbs. C) They have teeth. D) They are predatory carnivores. E) They are exclusively terrestrial.
To encourage the formation of well-developed, heavily branched roots, you should treat cuttings with
A) abscisic acid. B) gibberellin. C) auxin. D) ethylene.
Which group includes mammals, birds, and reptiles but excludes all other chordates?
A. Deuterostomes B. Amniotes C. Monotremes D. Vertebrates E. Tetrapods