The names of the monocot and eudicot groups refer to the number of ____
a. seed leaves in their embryos
b. ovules in their ovaries
c. flower parts they possess
d. leaf veins they possess
e. furrows in their pollen grains
ANSWER: a
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The number of resident species in estuaries tend to be ___________ relative to nearby aquatic ecosystems
a. an order of magnitude higher b. greater c. about the same d. fewer
The potential yield
a. is how many fish can be caught in a year. b. is an estimate of the amount of profit fishers can expect. c. is an estimate of the number of pounds of fish or shellfish that may be harvested per year. d. is an estimate of the profit from fish or shellfish that may be harvested per year.
The trend toward increased mobility of the world populations will probably lead to
A. increased allele frequency differences among populations. B. decreased allele frequency differences among populations. C. a decrease in mutation rate. D. no change in allele frequency differences among populations because of selection. E. none of these.
Amphibians are thought to have evolved from
A. spiny fish. B. lobe-finned fish. C. ray-finned fish. D. skates and rays. E. annelids.