Many European ecologists use a complex taxonomy of communities, based on a rigidly defined method of sampling plant species composition, which places each community in a hierarchy of types organized by their similarity. After whom is this system named?
A) R. H. Whittaker
B) H. A. Gleason
C) F. E. Clements
D) J. Braun-Blanquet
Ans: D) J. Braun-Blanquet
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The influenza virus is typical of many animal viruses in that is has an envelope composed of lipids and glycoproteins. Which of the following statements about the envelope is ACCURATE?
A. The envelope glycoproteins are encoded by genes found in the host genome. B. The envelope is inside the capsid. C. The envelope is obtained from the host cell when the virus buds from the plasma membrane. D. The envelope is obtained from the host cell upon entry into the cell. E. The envelope is formed via the action of integrase.
Which of the following is NOT an ecological service performed by plants?
A) Capture solar energy B) Produce oxygen as a by-product of photosynthesis C) Increase soil humidity D) Help create and maintain soil E) Reduce erosion by wind and water
The four most common elements in living organisms are
A) C, H, O, Fe. B) C, H, O, Na. C) C, H, O, N. D) C, N, O, Na.
A tetrapod is a type of ____________.
a. plant b. fungus c. animal d. protists