Some ecologists specialize in endangered species. Because the emphasis of their studies would involve counting members of the same species in an area, which branch of ecology would this job fall under?
a. organismal ecology
b. community ecology
c. population ecology
d. ecosystem ecology
c. population ecology
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Which of the following is the primary role of modern zoos in conservation efforts?
a. providing wildlife education to the public b. breeding and releasing endangered species c. raising funds and awareness for conservation preserves d. restoring keystone species to their original ecosystems
A positive antibody titer indicates
A) previous exposure to an antigen. B) active infection. C) latent disease. D) a healthy individual.
Methylene blue in EMB agar is selective for
A) gram-positives. B) gram-negatives. C) viral plaques. D) both gram-positives and gram-negatives.
Which fish has a sharp spearlike point at the tip of their tail that defends them against predators and sometimes secretes venom?
a. lamprey b. hagfish c. sharks d. stingrays e. lungfish