The root of a carrot serves as
A. Only a translocation sink
B. Only a translocation source
C. Both a translocation source and sink
D. Only a transpiration source
Ans: C. Both a translocation source and sink
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Organisms that require increased pressure for optimum growth are called
A. osmotolerant. B. osmophilic. C. barotolerant. D. barophilic.
The cochlea _____
I) amplifies sound vibrations II) collects sound pressure waves III) detects the frequency of sounds A) only I B) only II C) only III D) only II and III E) I, II, and III
Lipopolysaccharide of the outer membrane of gram-negative cell walls is called ________.
A. enterotoxin B. leukocidin C. exotoxin D. hemolysin E. endotoxin
The Hardy-Weinberg principle shows that if the population is large, inheritance alone does not cause
changes in allele frequency. _______ Indicate whether the statement is true or false.