A characteristic shared by fungi and protists is that both are generally
a. aerobic
b. haploid at all stages
c. composed of mycelia
d. propagated by spores
e. capable of phagocytosis
Ans: a. aerobic
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Why are some experts concerned about the use of the Bt toxin in agriculture?
a. Insects may develop resistance to the Bt toxin. b. The Bt toxin may be harmful to most mammals. c. The Bt toxin is not approved for organic farming. d. New diseases are introduced by the Bt toxin.
Which term refers to judging information before accepting it as fact?
a. critical thinking
b. law c. theory d. fact e. hypothesis
Net primary productivity is generally greatest at
A) tropical latitudes near the equator. B) subtropical latitudes (e.g., 25° of latitude). C) temperate latitudes (e.g., 50° of latitude). D) polar latitudes (e.g., 80° of latitude).
______ is a change in the allele frequencies of a population over time.
a) Vicariance b) Microevolution c) Genetic equilibrium d) Speciation