The open ocean is a(n) ________ environment.
A. oligotrophic
B. phylotrophic
C. eutrophic
D. neotrophic
Answer: A
You might also like to view...
Despite the aggressive defense of the cardiovascular system by the immune system, some microbes can invade and establish an infection in the blood. From the following list of microbes and their virulence factors, identify the mismatch.
A. Borrelia burgdorferi changes its surface antigens to avoid immune recognition. B. Coxiella burnetii produces an endospore-like structure. C. Trypanosoma cruzi cloaks itself in host proteins to avoid immune recognition. D. Bacillus anthracis produces antioxidants to combat lysosomes.
Fishes that reproduce in fresh water and migrate out to sea as adults are considered:
a. catadromous. b. anadromous. c. polyandrous. d. polygynous. e. demersal.
In insects and spiders, __________ take up fluid, uric acid, and solutes from the blood and deliver them to the gut. Fill in the blank(s) with the appropriate word(s)
Where does germination of a pollen grain occur in a flowering plant?
a. in the anther. b. in the micropyle. c. on the surface of the corolla. d. on the stigma.