The animal in the above diagram has a __________

circulatory system.
a. closed
b. open
c. semi-closed
d. vascular
e. none of these


Answer: b

Biology & Microbiology

You might also like to view...

What is the purpose of cholesterol in plasma membrane

What will be an ideal response?

Biology & Microbiology

Temperature changes can affect the ability of water to dissolve and keep materials in solution. Which statement below is an appropriate hypothesis concerning water temperature and dissolved oxygen?

A) Lower water temperatures allow for lower concentrations of dissolved oxygen. B) Higher water temperatures allow for higher concentrations of dissolved oxygen. C) Lower water temperatures allow for higher concentrations of dissolved oxygen. D) Water temperatures do not affect the concentration of dissolved oxygen

Biology & Microbiology

Which of the following pairs is NOT correctly matched for Gram reaction?

A) Lyme disease — gram-negative B) tularemia — gram-negative C) anthrax — gram-positive D) Rocky Mountain spotted fever — gram-negative E) Ehrlichia — gram-positive

Biology & Microbiology

A couple gets married and decides to have 3 children. What is the probability that all three will be girls?

a. 3 x 1/2 b. 1/2 x 1/2 x 1/2 c. 1/2 d. 1/4 x 1/4 x 1/4

Biology & Microbiology