Among plants, a condition that results in an increase in the number of sets of chromosomes, is called
A. multi-genetics.
B. haploid.
C. polyploidy.
D. diploid.
Answer: C
You might also like to view...
Medical geographers have observed that the world-wide spread of HIV/AIDS from its hearth in Central Africa is best explained by a(n) ________ diffusion pattern
A) expansion B) hierarchical C) contagion D) combination of expansion and hierarchical
Which of the following statements is true?
a. Temperature inversions occur when a layer of cold air prevents warm air from rising. b. Temperature inversions exacerbate pollution problems. c. Temperature inversions last only a few minutes to a few hours. d. Normally, cool air near Earth's surface expands and rises, carrying pollutants higher into the troposphere. e. Temperature inversions help prevent air pollution.
Which of the following is a documented negative impact of dams?
A) decreased rainfall B) alteration of river sediment deposition C) increased atmospheric CFCs D) acid deposition E) alteration of river salinity
The very common carbonate mineral shown here that is a clear to light-gray color is
A. hematite. B. pyrite. C. calcite. D. dolomite. E. magnetite.