Compound leaves are defined as being divided into
A. blades.
B. companion cells.
C. leaflets.
D. stomata.
E. lateral meristems.
Answer: C. leaflets.
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Which of the following is true of osmosis?
A) Osmosis only takes place in red blood cells. B) Osmosis is an energy-demanding or "active" process. C) In osmosis, water moves across a membrane from areas of lower solute concentration to areas of higher solute concentration. D) In osmosis, solutes move across a membrane from areas of lower water concentration to areas of higher water concentration.
The arrangement of organisms into groups is best described as ________.
A. identification B. taxonomy C. classification D. systematics
With frequency-dependent selection, highest mortality can be expected in ____
a. the most abundant genotype b. the least abundant genotype c. the least well-adapted genotype d. heterozygous genotypes e. homozygous recessive genotypes
After your eye exam, the optometrist breaks the bad news: "Your lens is a little too flat, and as a result it is focuses the image just in front of your retina." What kind of vision do you have?
A. astigmatism B. nearsighted C. farsighted D. night-blindness