Which of the following organisms are classified within the protists under algae?
A. Dinoflagellates
B. Diatoms
C. Seaweeds
D. All of the above are types of algae
Answer: D
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Unlike in animal meiosis, meiosis in plants gives rise to
a. diploid spores. b. haploid spores. c. diploid gametes. d. haploid gametes. e. cells without walls.
The letter B indicates a(n) ____
a. producer b. herbivore c. detritivore d. carnivore e. decomposer
Which of the following is NOT an example of a density-dependent limiting factor that will influence carrying capacity?
a) disease b) predation c) flooding d) territory availability e) food supply
Physician Edward Jenner promoted the use of cowpox, a harmless pathogen related to the dangerous smallpox, as a vaccination to provide patients immunity from future smallpox epidemics. This is an example of
A. active immunity. B. passive immunity. C. an inflammatory response that decreased the IgE production and increased T cells. D. developing high levels of interferon although Jenner did not realize these diseases were viral. E. developing high levels of complement.