Biology Final   To measure the population of lake trout in a 250 hectare lake, 200 individuals were netted and marked with a fin clip, and then returned to the lake

1. To measure the population of lake trout in a 250 hectare lake, 200 individuals were netted and marked with a fin clip, and then returned to the lake. The next week, the lake is netted again, and out of the 200 lake trout that are caught, 50 have fin clips. Using the capture-recapture estimate, the lake trout population size could be closest to which of the following?

800

2. Long-term studies of Belding's ground squirrels show that immigrants move nearly 2 km from where they are born and make up 1 to 8% of the males and 0.7 to 6% of the females in other populations. On an evolutionary scale, why is this significant?

These immigrants provide a source of genetic diversity for the other populations

3. Demography is the study of

the vital statistics of populations and how they change over time

4. Natural selection has led to the evolution of diverse natural history strategies, which have in common

maximum lifetime reproductive success

5. Natural selection involves energetic trade-offs between

high survival rates of offspring and the cost of parental care

6. The three basic variables that make up the life history of an organism are

age when reproduction begins, how often reproduction occurs, and how many offspring are produced per reproductive episode

7. Which of the following is a conclusion that can be drawn from this graph?

There appears to be a negative correlation between brood enlargements and parental survival

8. Which of the following pairs of reproductive strategies is consistent with energetic trade-off and reproductive success?

Female rabbits that suffer high predation rates may produce several litters per breeding season, and coconuts produce few fruits, but most survive when they encounter proper growing conditions

9. As N approaches K for a certain population, which of the following is predicted by the logisitic equation?

The growth rate will approach zero.

10. A population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02. Estimate the number of individuals added to (or lost from) a population of 1,000 individuals in one year.

40 individuals added