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AP Biology Unit 8
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Exam of 13 pages for the course Crimes against property - SCCJA. at Crimes against property - SCCJA. (AP Biology Unit 8)
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AP Biology Unit 8A fish population of 250 in a pond has a maximum annual rate of increase of 0.8.
If the carrying capacity of the pond is 1,500 for this species, what is the expected
population size after one year? - ANS-417
A group of researchers suggest that the concentration of available phosphate in this
particular section of the British river does not have a significant impact on which plant
species grow. Alternatively, another group of researchers hypothesize that levels of
available phosphate do affect which plant species grow at this location. Which of the
following observations would best support this alternative hypothesis? - ANS-Increased
fertilizer use near this section of the river has led to increased runoff of phosphates into
the river.
A massive increase in the growth of a specific species of algae resulted in
record-breaking levels of a potentially dangerous toxin being released into the water. A
researcher hypothesizes that the unusual growth of this algal species was caused by an
increase in water temperature. The researcher designs an experiment to test the
hypothesis.
Which of the following is the dependent variable in the researcher's experiment? -
ANS-The growth of the algae
A photosynthetic organism would be represented by which species? - ANS-A
A population of 250 birds inhabit the canopy of a tropical rain forest that has a carrying
capacity of 400 birds.
What is the maximum population growth rate (rmax)
if the population grows to 283 in one year? - ANS-0.35
A scientist interested in investigating how human population trends might affect local
animal species' richness stipulates a null hypothesis that animal biodiversity in rural
areas will be unaffected in the future by the human population trends shown in Figure 1.
Which of the following would best refute this null hypothesis? - ANS-Urbanization
causes habitat fragmentation.
, All of the following are density-dependent factors that limit animal populations EXCEPT
- ANS-weather
As depicted in the diagram, honeybees communicate the location of flower patches to
members of their hives with waggle dances that give information about the direction and
distance to the flowers. Which of the following statements about how honeybees
communicate the position of flower patches is most consistent with the model? -
ANS-The farther the target flowers from the hive, the longer the waggle phase.
Based on Figure 1, which of the following is the most likely short-term effect of a
decrease in the killer whale population? - ANS-The sea otter and kelp populations will
increase, while the sea urchin population will decrease.
Based on information in Figure 1, which of the following is closest to the annual growth
rate of the wolf population in Yellowstone National Park from 1996 to 2004 ? - ANS-17
wolves per year
Based on the data in Figure 1, which of the following statements is most accurate about
the species diversity of the four different environments that the students analyzed? -
ANS-Based on the data, there is no statistical difference between the species diversity
of plants in the light, moist environment and in the dark, moist environment.
Based on the data in the figure, a student claimed that since 2007, the carrying capacity
of wolves in Yellowstone National Park has been 100 wolves, and the maximum annual
per capita growth rate of gray wolves is 0.6 wolves per wolf per year.
Which of the following is closest to the calculated wolf population size in 2017 based on
the student's claim? - ANS-103
Based on the data in the table, which of the following best predicts the results of a study
in which natural populations of T. atratus and T. sirtalis are observed together in an
environment that includes a freshwater pond? - ANS-T. sirtalis will be observed near the
water whether or not T. atratus is present.
Based on the data, which of the following is the best approximation of the rate of growth
per week in section II from day 14 to day 21 ? - ANS-4.5 g/week
Based on the information in Figure 1, which of the following best predicts a short-term
effect of removing secondary consumer X from the community? - ANS-The one with a
significantly larger shaded white circle in the primary consumer level. Answer choice A
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