The fruits of which of the following plants are
dispersed by wind?
a. maple
b. thistle
c. dandelion
d. cattail
e. all of these
Answer: e
Biology & Microbiology
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In acidic soils or in habitats subjected to prolonged acid rain, what element is often released from rocks that is toxic to many plants?
A. iron B. chlorine C. molybdenum D. selenium E. aluminum
Biology & Microbiology
Which existing reptile group is most closely related to birds?
a. crocodilians b. lizards c. snakes d. tuataras e. turtles
Biology & Microbiology
Histamine
a. causes blood vessels to contract. b. causes capillaries to lose their permeability. c. causes an outward flow of fluids from the capillaries. d. reduces tissue swelling. e. enhances the function of cytokines.
Biology & Microbiology
On average, genetic drift will increase the frequency of a deleterious allele.
a. true b. false
Biology & Microbiology