Diamond shaped scales on lower order fish like bowfins and sturgeons
A) ganoid
B) cycloid
C) ctenoid
D) placoid
Ans: A) ganoid
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Morphological divergence
a. is the change in body form from that of a common ancestor. b. is the change in body form to resemble that of an ancestor. c. is no change in body form over time. d. does not occur in related species. e. only occurs in unrelated species
When an animal's body temperature drops below normal, the body responds to raise the temperature using positive feedback loops
Indicate whether the statement is true or false
All of the following characterize the secondary response to an antigen exceptÂ
A. it is also known as the anamnestic response. B. it is mostly IgM antibodies that are produced. C. a higher titer of antibody is produced than the primary response. D. a longer persistence of antibody than with the primary response. E. a quicker rate of antibody synthesis than the primary response.
The cell walls of most fungi are composed of
A. dentine. B. chitin. C. peptides. D. glycerol. E. cellulose.