NR 103 Exam 2 Questions with Verified Answers 2026

1 population group of organisms of a single species that interact and interbreed in a common place at a particular time 2 Purpose of models helps us make predictions about the future based on current trajectories 3 continuous produce offspring at anytime - no specific time constraints 4 discrete produce offspring at specific time intervals - specific seasons or annual reproduction periods 5 population growth change in population size through time. 6 population growth rate speed of population growth. The percentage change in population time over a given time. 7 λ is the proportional change in population size from one year to the next, and considers both births and deaths. 8 Assumptions of the Exponential Growth Model •No movement of animals in or out (Close population, no Immigration or Emigration) •Constant growth •No time lags •No genetic structure •No age or size structure 9 Doubling time the number of years it would take a population to double its size, given its current growth rate. 10 Density independent factors affect birth and death rates in a way that is unrelated to population density