An analysis of derived characters is used to generate a
a. family tree based on external appearance
b. family tree based on DNA structure
c. cladogram
d. traditional classification system
Ans: c. cladogram
You might also like to view...
In a particular layer of rock, a number fossilized ferns are found, but no fossilized mosses are found. What conclusions can be drawn from this finding?
A. The soft tissues of mosses may not have fossilized as readily as the lignified tissues of ferns, so it is difficult to draw any conclusions from this limited sample. B. Mosses and ferns did not coexist in the same environment. C. There are fewer species of moss than ferns. D. Ferns evolved earlier than mosses, so it is not surprising to find a layer with only ferns and no mosses. E. Ferns decompose more rapidly than mosses and thus are more likely to fossilize.
A hormone produced by fat cells appears to regulate the amount of food consumed, and imparts the feeling of satiety. Name this hormone
a. secretin b. glucagon c. leptin d. srY e. FSH
How does the protozoan Trypanosoma evade detection by the immune system?
A) It produces a capsule which is composed of polysaccharides similar to those found in the host. B) It can change the surface antigens frequently, preventing the immune system from tracking it. C) It prevents phagosome-lysosome fusion. D) It can resist oxidation inside macrophages.
Roots that form on stems or leaves are called ____.
A. taproots B. fibrous C. adventitious D. primary E. secondary