What is the purpose of the fragrant oils found in rosemary and thyme?
A) They encourage humans to pick them and spread their seeds.
B) They protect the plants from fire.
C) They help fuel fires, to which they've become adapted.
D) They discourage humans from consuming the plants.
C
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The two major forms of carbon that remain following microbial degradation are
A) methane, organic matter, and fossil fuels. B) methane and carbon dioxide. C) lignin and fossil fuels. D) organic matter and hydrocarbons.
How would you characterize the process of fermentation? Select all that apply
A. a very useful way of deriving energy without oxygen as amount of ATP made is high B. a limited way of deriving energy without oxygen as amount of ATP made is low C. a useful process in the production of alcohol D. a useful process in the production of cheese and yogurt E. a useful process for making glucose F. a useful process for organisms that were around when there was very little atmospheric oxygen
The plant hormone ____ is primarily responsible for the bending of a plant shoot toward light
a. auxin b. ethylene c. systemin d. salicylic acid e. brassinosteroid
Which of the following events occurs to a territory-holding male zebra finch when he hears the song of
the male zebra finch that holds the neighboring territory?
a. Cells in the nucleus of his forebrain fire frequently. b. The territory-holding male flies out to drive off the neighboring male. c. Cells in the nucleus of his forebrain do not respond to the song of the neighboring male. d. Testosterone levels in his blood rise measurably. e. The territory-holding male initiates a ritualized threat display that may culminate in an expansion of his territory into the neighbor's land.