Q: Which of the following equations correctly represents net primary productivity (NPP)?

$$\text{NPP} = \text{Total carbon fixed per year} - \text{Carbon oxidized during cellular respiration}$$

Question 1

Which of the following best describes the primary goal of ecology?

Accepted Answer

To understand how organisms interact with their environment and the factors that determine their distribution and abundance

Question 2

Which of the following is an example of a biotic factor that can limit the distribution of a species?

Accepted Answer

Predation by another species

Question 3

A researcher is studying how the migration distance of mule deer affects their reproductive timing. Which area of ecological study does this research best fit?

Accepted Answer

Organismal ecology

Question 4

Which of the following best defines a biome?

Accepted Answer

A region characterized by distinct abiotic characteristics and dominant vegetation types

Question 5

Why are the tropics warmer than the poles?

Accepted Answer

The tropics receive sunlight at a higher angle, resulting in more solar energy per unit area

Question 6

Which process is responsible for bringing nutrient-rich water from the ocean bottom to the surface, increasing productivity in coastal regions?

Accepted Answer

Ocean upwelling

Question 7

What is the main difference between an exotic species and an invasive species?

Accepted Answer

Exotic species are non-native, while invasive species are non-native and spread rapidly, often harming native species

Question 8

Which of the following is a likely consequence of global climate change on terrestrial biomes?

Accepted Answer

Shifts in the distribution of plant and animal species as temperature and precipitation patterns change

Question 9

Which abiotic factor is most important in dividing aquatic biomes into photic and aphotic zones?

Accepted Answer

Light availability

Question 10

A mountain range causes one side to be lush and wet, while the other side is dry and desert-like. What is this phenomenon called?

Accepted Answer

Rain shadow

Question 11

Which of the following equations correctly represents net primary productivity (NPP)?

Accepted Answer

$$	ext{NPP} = 	ext{Total carbon fixed per year} - 	ext{Carbon oxidized during cellular respiration}$$

Question 12

Which of the following is an example of a historical factor affecting species distribution?

Accepted Answer

The formation of a land bridge between North and South America

Question 13

Which of the following best describes the greenhouse effect?

Accepted Answer

The trapping of outgoing longwave radiation by atmospheric gases, warming the planet

Question 14

Which of the following is a plausible impact of invasive species on native communities?

Accepted Answer

They can outcompete and eliminate native species

Question 15

Which of the following is NOT a mechanism that brings nutrients to the photic zone in aquatic ecosystems?

Accepted Answer

Photosynthesis

Question 16

A scientist is studying how the presence of mangroves affects coastal erosion during hurricanes. Which level of ecological study does this represent?

Accepted Answer

Ecosystem or global ecology

Question 17

Which of the following best explains why seasons exist on Earth?

Accepted Answer

The Earth's axis is tilted at 23.5 degrees relative to its orbit

Question 18

Which of the following is a direct human impact on aquatic biomes?

Accepted Answer

Introduction of invasive species such as zebra mussels

Question 19

Which of the following is a key abiotic factor that determines the type of terrestrial biome in a region?

Accepted Answer

Average annual temperature and precipitation

Question 20

A population of salmon is studied to determine how fluctuations in growth rate affect its evolutionary potential. Which concept is being investigated?

Accepted Answer

Effective population size

Introduction to Ecology and the Distribution of Life

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