Which animals are bilateral with a tubular gut, a coelom and conspicuous segmentation, inside and out?
a. sponges
b. cnidarians
c. flatworms
d. annelids
e. mollusks
d
You might also like to view...
During mitotic cleavage
a. no cell division occurs and the mass does not increase. b. no cell division occurs and the mass does increase. c. cell division occurs and the mass does not increase. d. cell division occurs and the mass does increase. e. the cell is in a dormant stage.
An aneurysm is a weakening of the walls of a blood vessel. Which of the following blood vessels would be most likely to break open if an aneurysm is present?
A) capillary B) lymph duct C) artery D) venule
What is combination drug therapy?
A) a succession of drugs to combat an infection–as the infecting microorganism becomes resistant to one drug, the patient is put on another B) a mixture of drugs and homeopathic medications C) a mixture of several different kinds of drugs given simultaneously D) one drug that has a combination of effects
Respond to the following statements in reference to the four structures of the heart listed below.
A. Blood from the superior and inferior vena cava enters the heart via this structure. B. Oxygenated blood enters the heart via this structure. C. Blood is pumped to the majority of the body by this structure. D. Blood passes to the lungs from this structure. E. Deoxygenated blood exits the heart from this structure.