Question 1

Which of the following best describes the focus of ecosystem ecology?

Accepted Answer

The study of energy flow and nutrient cycling among organisms and their physical environment.

Question 2

A population of rabbits is introduced to an island with abundant resources and no predators. Which population growth model would best describe their initial population increase?

Accepted Answer

Exponential growth model

Question 3

Which two abiotic factors are most important in determining the distribution of terrestrial biomes, as shown in the clinograph (first image)?

Accepted Answer

Annual mean temperature and annual mean precipitation

Question 4

In the second image, which dispersion pattern is most likely to result from territorial behavior among individuals?

Accepted Answer

Uniform

Question 5

Which equation represents the exponential growth of a population?

Accepted Answer

$$\frac{dN}{dt} = rN$$

Question 6

A population of fish in a lake is observed to have a constant mortality rate throughout its life span. Which survivorship curve does this population most likely exhibit?

Accepted Answer

Type II

Question 7

Which of the following is an example of a biotic factor influencing the distribution of a species?

Accepted Answer

Predation by wolves

Question 8

What is the primary reason the logistic growth model predicts a sigmoid (S-shaped) curve, as shown in the fourth image?

Accepted Answer

Population growth slows as resources become limited and the population approaches carrying capacity.

Question 9

Which of the following best describes the 'rain shadow' effect?

Accepted Answer

A phenomenon where moist air rises over a mountain, loses moisture as precipitation on the windward side, and creates arid conditions on the leeward side.

Question 10

Which of the following is NOT a component of climate?

Accepted Answer

Soil composition

Question 11

If a population is demonstrating zero population growth, which of the following must be true?

Accepted Answer

The per capita birth rate equals the per capita death rate.

Question 12

Which of the following is an example of a condition that might lead to exponential population growth in a natural population?

Accepted Answer

Introduction of a non-native species with no natural predators

Question 13

Which marine biome covers the largest portion of Earth's surface?

Accepted Answer

Oceanic pelagic zone

Question 14

Which of the following best describes the difference between macroclimate and microclimate?

Accepted Answer

Macroclimate refers to large-scale climate patterns, while microclimate refers to small-scale environmental variations.

Question 15

Which equation represents the logistic growth of a population?

Accepted Answer

$$\frac{dN}{dt} = rN \left( \frac{K-N}{K} \right)$$

Question 16

Which of the following is a characteristic of r-selected species?

Accepted Answer

High reproductive rates and little parental care

Question 17

Which of the following is NOT an example of a limiting resource that can influence carrying capacity?

Accepted Answer

Genetic drift

Question 18

Which term describes the study of populations in relation to their environment, including factors affecting population density and growth?

Accepted Answer

Population ecology

Question 19

Which of the following best explains why a large value for $$(K-N)/K$$ predicts growth close to the maximum rate of increase for a population?

Accepted Answer

The population is far from carrying capacity, so resources are abundant and growth is nearly exponential.

Question 20

Which of the following is an example of a Type III survivorship curve?

Accepted Answer

Oysters, which produce many offspring but few survive to adulthood

Population Ecology and the Distribution of Organisms – Study Guide Walkthrough

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