The mechanism that causes a vine’s tendrils to grow around an object, such as a wire fenceline, is called ____
a. thigmotropism
b. phototropism
c. gravitropism
d. vernalization
e. photoperiodism
ANSWER: a
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True or False: Traits favored by sexual selection are the same traits favored by natural selection
A. true B. false
Imagine you are examining a small mammal that lives under desert conditions and is water deprived. You would predict that levels of the antidiuretic hormone (ADH) in its blood would be
A. high, and that its urine would be more concentrated than its blood. B. high, and that its urine would be less concentrated than its blood. C. low, and that its urine would be more concentrated than its blood. D. low, and that its urine would be less concentrated than its blood. E. high, and that its urine would be no more concentrated than its blood.
Population genetics is the study of:
a. the relationship between natural selection and genetics. b. the phenotype expression of a population. c. all the alleles in a given population of organisms. d. the presence of analogous structures across different species.
Most organisms in the intertidal zone of sandy shores burrow into the sand
Indicate whether the statement is true or false