A microbial mat
A. is a form of biofilm.
B. is poorly organized.
C. contains only obligate anaerobes.
D. is constructed to prevent interactions between the various layers of microorganisms.
E. is a form of biofilm AND is poorly organized.
A. is a form of biofilm.
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When species diversity is calculated, what is being measured?
A. Species number. B. The evapotranspiration rate. C. Both species number and relative abundance. D. The resistance of a community to disturbance. E. The process of inhibition.
A fox consumes a meal containing 5000 J of energy, and loses 1800 J in feces. If the fox has a production efficiency rate of 2%, how much energy does it use in cellular respiration and maintenance?
A. 1104 J B. 2200 J C. 44 J D. 2156 J E. 394 J
Which pigment(s) is (are) characteristic of
chlorophytes? a. chlorophyll a b. phycobilins c. chlorophyll b d. phycoerythrins e. chlorophylls a and b
Pores on the leaf surface that function in gas exchange are called
a) stomata. b) hairs. c) sclereids. d) xylem cells. e) phloem cells.