Question 1

Which of the following best defines ecology?

Accepted Answer

The study of how organisms interact with each other and their environment.

Question 2

Which level of ecological study focuses on how energy and nutrients move among organisms and their environment?

Accepted Answer

Ecosystem ecology

Question 3

Why are the tropics warmer than temperate regions?

Accepted Answer

The tropics receive more sunlight per unit area due to the Earth's curvature.

Question 4

Which of the following is a major abiotic driver of climate?

Accepted Answer

Solar radiation

Question 5

If the concentration of greenhouse gases in the atmosphere increased, what would be the most likely effect?

Accepted Answer

The amount of longwave radiation escaping back into space would decrease.

Question 6

Which process is responsible for the formation of deserts at approximately 30° latitude north and south?

Accepted Answer

The sinking of cool, dry air after it has lost moisture at the equator.

Question 7

What would happen to the seasons if the Earth's tilt increased from 23.5° to 28°?

Accepted Answer

Winters and summers would be more severe.

Question 8

Which of the following best describes a biome?

Accepted Answer

A major type of ecological community defined primarily by distinctive plant and animal species, climate, and geography.

Question 9

How do mountains influence regional climate?

Accepted Answer

They create rain shadows by forcing moist air to rise and cool, causing precipitation on one side and dry conditions on the other.

Question 10

Which of the following is an example of community ecology?

Accepted Answer

Studying how a fungal pathogen of bumblebees changes the reproductive success of a plant species pollinated by the bumblebees.

Question 11

Which of the following statements about the greenhouse effect is correct?

Accepted Answer

Greenhouse gases trap some outgoing longwave radiation, reflecting it back to Earth and warming the system.

Question 12

Which of the following best explains why polar regions are cooler than the equator?

Accepted Answer

Sunlight strikes the poles at a lower (smaller) angle.

Question 13

Which of the following is true about the effect of oceans on climate?

Accepted Answer

Oceans moderate coastal climates because water has a high specific heat.

Question 14

Which of the following is a correct sequence of the five main biological levels studied in ecology, from smallest to largest?

Accepted Answer

Organisms, populations, communities, ecosystems, biosphere

Question 15

Which of the following best describes the difference between weather and climate?

Accepted Answer

Weather refers to short-term atmospheric conditions, while climate refers to long-term patterns over decades.

Question 16

Which of the following is a real-world example of ecosystem ecology?

Accepted Answer

Studying how salmon decomposition releases nutrients that are used by other organisms.

Question 17

Which of the following is NOT a greenhouse gas?

Accepted Answer

Oxygen ($$O_2)$$

Question 18

Which of the following best explains the rainshadow effect?

Accepted Answer

Mountains force moist air to rise, cool, and lose moisture on one side, creating dry conditions on the other side.

Question 19

Which of the following is a direct result of the Earth's tilt and orbit?

Accepted Answer

The occurrence of seasons.

Question 20

Which of the following is a plausible effect of ocean gyres on climate?

Accepted Answer

They move warm water to higher latitudes and cold water to lower latitudes, influencing local climate patterns.

Ecological Scale and the Physical Environment: Climate, Biomes, and Levels of Ecological Study

Study Guide - Practice Questions