Are growth rates constant until K is achieved?
a. yes
b. no
b
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What relationship between prairie dogs and mesquite is suggested by this experiment?
a. Prairie dogs and mesquite appear to be unable to co-exist. b. Mesquite seems to preclude establishment of prairie dog communities. c. Prairie dog communities seem to preclude the establishment of mesquite. d. All of the above.
Quantitative inhibitors
A) are produced in small quantities by a plant. B) are toxic to herbivores. C) reduce digestibility of plant material. D) include cyanide and alkaloids.
The woody plant genus Frankia produces root nodules that harbor
a. actinobacteria b. rhizobium c. fungi d. green algae e. aktinites
Antigen-presenting cells include
A. dendritic cells and macrophages. B. dendritic cells and B cells. C. macrophages and B cells. D. macrophages, B cells and dendritic cells. E. macrophages.