The root-shoot axis of plants
A. is determined by sunlight, as roots grow away from the sun and shoot grow toward the sun.
B. is determined by three axes.
C. is determined by the orientation of the first zygotic cell division.
D. develops in segments.
E. None of the answers are correct.
Answer: C
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The substantial reduction of the total population of microorganisms on inanimate objects and the destruction of potential pathogen is called
A. antisepsis. B. sanitization. C. disinfection. D. sterilization.
The normal microbiota of the genital tract of women is
A. affected by estrogen levels. B. dependent on the activity of Lactobacillus. C. unchanging. D. typically composed of Escherichia coli. E. affected by estrogen levels AND dependent on the activity of Lactobacillus.
The first tetrapods evolved
a. on land. b. after the amphibians. c. in water. d. after the first amniotes. e. from the ray-finned fishes.
The maximum rate of natural increase of a population that occurs under ideal conditions is the
A. environmental resistance. B. density-independent population. C. biotic potential. D. carrying capacity. E. population growth.