Bio 182 Modules 5 & 6 Exam Questions With Correct Answers
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Course
BIO 182
Institution
BIO 182
Bio 182 Modules 5 & 6 Exam Questions With
Correct Answers
Which group is not a population?
A. People
B. Bacteria
C. Giant pandas
D. Bark scorpions
E. All four groups are populations - answerE
How would you estimate the number of whales in a population? - answerMark and recapture
True or Fa...
EXAM STUDY MATERIALS July 26, 2024 9:30 AM Bio 182 Modules 5 & 6 Exam Questions With Correct Answers Which group is not a population? A. People B. Ba cteria C. Giant pandas D. Bark scorpions E. All four groups are populations - answer✔✔E How would you estimate the number of whales in a population? - answer✔✔Mark and recapture True or False? Sampling quadrants would be the better method for estimating th e number of whales in a population. - answer✔✔False; by putting down little sub -samples and counting how many whales are in there, those whales could leave and swim somewhere else so that when you put a quadrant down somewhere else, that same whale might h ave come up again as they are mobile organisms. Therefore, mark and recapture would be a better method for estimating the number of whales in a population. True or False? Mark and recapture would be the better method for estimating the number of saguaros ( cacti) in a population. - answer✔✔False; unnecessary because these plants don't move. Sampling would be a better method for non -mobile organisms. True or False? The shrinking population between 1965 and 1970 could have resulted from a decrease in the birth rate or an increase in the death rate. - answer✔✔True; it "could" be either of these. True or False? The growing population between 1985 and 1995 could have resulted from a decrease emigration or an increase in immigration. - answer✔✔True; it "could" be e ither of these. Why do bluegills nest on the edge of the lake? - answer✔✔The habitat in the shallow water might receive more solar radiation, holds more zooplankton (which is what they eat), more protective over young than it in deeper water where larger f ish reside, more algae for the fish to hide in, warmer water for embryos to develop quickly and enhance survival/fitness. EXAM STUDY MATERIALS July 26, 2024 9:30 AM Activity: Write a Figure Legend - answer✔✔Bluegills prefer certain water temp; when given a choice between 27 degrees celsius and 31 d egrees celsius, bluegills spent a majority of their time at 31 degrees celsius. True or False? If males compete for space, a large male will likely force a small male to spend less time on the side of the tank with the optimal temperature. - answer✔✔True; if males compete for space, large males will force small males out. True or Fals e? Both models assume that no individuals immigrate into the population. - answer✔✔False; they do not assume that no individuals immigrate. True or False? Competing species are more likely to coexist if their growth rates (r1 and r2) increase. - answer✔✔False; R1 and R2 actually don't have an effect on whether species coexist, instead, they change the rate at which the population grows, towards it's carrying capacity; it doesn't have any effect on whether two species coexist, only how quickly those species can grow when their populations are small; K1 and K2, as well as alpha and beta, have a larger effect. True or False? Paramecium are most likely to persist at intermediate temperatures? - answer✔✔False; the competitive effect is going to be largest and at intermediate temps, paramecium will likely go extinct; it will likely persist at high and low temps. Activity: Write a Figure Legend - answer✔✔Paramecium went extinct when competing with compendium at 26 degrees, but persisted at 22 degrees and 30 degrees. What is coevolution? - answer✔✔Reciprocal evolution between two or more species. True or False? A pair of species engaged in comensalism can coevolve. - answer✔✔False; only one member receives a benefit. How can several species of dung beetles coexist? - answer✔✔There has to be something about their niches that differ; if they both eat dung, it can't be what they eat, but there has to be something else that keeps them from out -competing one another; there has to be some other resource that's limiting the o ne species from getting all the dung. True or False? If species of beetles have the same niche, eventually all but one species will become extinct. - answer✔✔True; if they had the same niche, eventually one of them would out -
compete the others and they wou ld go extinct; even if they were identical in their ability to compete by chance, one of them would go extinct. True or False? If species compete for many generations, natural selection would cause their niches to diverge. - answer✔✔True; natural selection can select for variance (mutations) that separate them and reduce competition. How might cane toads change communities? - answer✔✔Things that they could eat would decrease in frequency and perhaps go extinct; predators that are feeding on cane toads are g oing to be negatively affected themselves by either dying or being drugged out to the point where a
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