BIOL 301 Exam Practice Questions and Answers

BIOL 301 Exam Practice Questions and Answers Which dispersion even would you expect to observe for a population with patchy resources? - Ans:- Clustered Select the correct term for this definition: Number of individuals per unit area or volume. - Ans:- Density Which metapopulation model most aligned with the blue tit example where populations flourished in the Downy Oak forest and those individuals would disperse to the neighboring Holm Oak forest? - Ans:-Source-Sink Metapopulation model Given that environments are heterogeneous, some areas contain high-quality resources while other contain low-quality resources, organisms within a population following ideal free distribution have a tendency to distribute themselves where - Ans:-the per capita benefit is the same for all members If you wanted to evaluate the population growth of Escherichia coli, which type of model would you select? - Ans:-continuous time model ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/12 Which model would evaluate population growth taking into account density dependent factors? - Ans:-dN/dt = rN (1-(n/K)) Which of the following are density independent factors? - Ans:-temperature, precipitation and catastrophic events True/False: Negative density dependence maintains that as a population density increases, the intrinsic growth rate increases. - Ans:-False Using a continuous model, what would the population size be for an initial population (N=300) with an intrinsic growth rate of 0.42 and a time period of 5 years? - Ans:-2449.85 dN/dt= rN. From this equation, what does N represent? - Ans:-the number of individuals in the population You are studying a population of frogs which made a remarkable recovery from the brink of extinction increasing from 65 individuals to 1305 over 15 years with an intrinsic growth rate of 0.2. What is the doubling time for this species? - Ans:-3.45 years Based on the r value given in the previous question, what would you expect the corresponding lambda to be? - Ans:-greater than 1 Calculate the generation time (T) for a population with a net reproductive rate (Ro= 2.5) and expected births weighted by age of 5.3. - Ans:-2.12 ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/12 An organism experiencing very high mortality in juvenile stages but then relatively stable survivorship until old age would be characterized by which type of survivorship curve? - Ans:-Type III Using a continuous time model to evaluate population growth rates and incorporating density dependent factors we introduce the variable tau. What does this variable represent? - Ans:-a time lag in population growth rates A population of moose has a r=0.3 and a tau = 1.2, what type of oscillation would you expect to observe around K? - Ans:-no oscillation In life table analysis, _____________ of females is defined as the number of offspring per breeding cycle. - Ans:-fecundity Which term represents the variation in birth and death rates due to environmental factors? - Ans:- Environmental Stochasticity Which term is defined by when a larger p