The bark from _______ tree species was the original source of salicylic acid, the pain-relieving substance in aspirin.
A. Willow
B. Cinchona
C. Kola
D. Maple
E. Yew
Ans: A. Willow
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The production of root hairs is mostly dependent on which of the following influences?
A. auxin production B. position of an epidermal cell C. width of the root D. length of the root E. position of the root in the soil
Which ponds contained only killifish as predators?
a. primero and quinto b. segundo, tercero, and sexto c. tercero and quinto d. quarto, sexto, and septimo e. none of the above (all ponds containing killifish also contained cichlids)
Filopodia that are supported by microtubules are known as ________.
A. axopodia B. micropodia C. reticulopodia D. lophopodia E. tubulopodia
Different members of a bacterial species can be categorized based on their susceptibility to lysis by specific bacteriophages.
A) True B) False