Africa, Asia, South America, and Antarctica share some patterns of primitive (fossil) plants and early reptiles, but do not have similar mammal populations. This, therefore,
A. casts serious doubts upon the theory of continental drift and fused land masses.
B. is an unsolved puzzle probably due to the random nature of biological evolution.
C. suggests that a pattern of land bridges existed at different times in geological history.
D. suggests that the earlier plants and reptiles evolved while continents were joined, but mammals radiated into diverse groups after separation.
E. suggests that the mammals evolved earlier while continents were joined, but plants and reptiles radiated into diverse groups after separation
Ans: D. suggests that the earlier plants and reptiles evolved while continents were joined, but mammals radiated into diverse groups after separation.
You might also like to view...
Describe what occurs when elemental sulfur is provided externally as an electron donor and how energy is obtained
What will be an ideal response?
A student has isolated a large compound (macromolecule) from cells. Chemical analysis of the compound shows that it is made up of the following elements: carbon, hydrogen, oxygen, nitrogen, and sulfur
To which group of macromolecules does this compound most likely belong? A) carbohydrate B) protein C) nucleic acid D) lipid E) aqueous
In therapeutic cloning, why are the embryonic cells used to treat an individual not rejected by that individual?
A. Because the individual's immune system is suppressed with drugs. B. Because the embryonic cells are cloned from the same individual they are injected into. C. They are rejected, and that is why this has not worked yet. D. Because the cells are embryonic.
Which of the following is a fungus infection commonly found on the feet of humans?
A. ringworm infection B. fungus blight C. malaria D. yeast infection