$$6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6$ + 6O_2$$

$$\text{Algae bloom} \rightarrow \text{Decomposition} \rightarrow \text{O}_2 \text{ consumption}$$

Question 1

Which two factors are most important in determining the type of terrestrial biome present in a region?

Accepted Answer

Temperature and precipitation

Question 2

A lake is experiencing frequent algae blooms and fish deaths. Which process is most likely responsible, and what is its primary cause?

Accepted Answer

Eutrophication caused by fertilizer runoff

Question 3

Which biome is characterized by the highest biodiversity and is most threatened by deforestation?

Accepted Answer

Tropical rainforest

Question 4

If the ozone layer is damaged, which of the following is a likely consequence for living organisms?

Accepted Answer

Increased exposure to UV radiation, leading to DNA damage

Question 5

Which zone of a lake is closest to the shore and supports the greatest diversity of life?

Accepted Answer

Littoral zone

Question 6

A keystone species is removed from a savanna ecosystem. What is the most likely outcome?

Accepted Answer

The ecosystem collapses due to loss of balance

Question 7

Which equation best represents the relationship between photosynthesis and solar energy in aquatic ecosystems?

Accepted Answer

$$6CO_2 + 6H_2O + 	ext{light energy} ightarrow C_6H_{12}O_6$ + 6O_2$$

Question 8

Which human activity is most likely to cause desertification in a grassland biome?

Accepted Answer

Overgrazing by livestock

Question 9

Which aquatic zone is characterized by little or no sunlight and low levels of photosynthesis?

Accepted Answer

Profundal zone

Question 10

Which biome is most likely to have very fertile soil but is endangered due to farming and overgrazing?

Accepted Answer

Grassland

Question 11

What is the primary difference between oligotrophic and eutrophic lakes?

Accepted Answer

Oligotrophic lakes have low nutrients and clear water; eutrophic lakes have high nutrients and lots of plant growth

Question 12

Which biome is most likely to be affected by logging and habitat loss due to its moderate climate?

Accepted Answer

Temperate forest

Question 13

A region with low annual precipitation and high average temperature is most likely classified as which biome?

Accepted Answer

Desert

Question 14

Which human impact is directly linked to the depletion of the ozone layer?

Accepted Answer

Release of chlorofluorocarbons (CFCs)

Question 15

In a lake, which zone is most likely to support rooted plants and amphibians?

Accepted Answer

Littoral zone

Question 16

Which biome is characterized by cold environments and low biodiversity?

Accepted Answer

Tundra

Question 17

Which process is most likely to create a 'dead zone' in a lake or coastal area?

Accepted Answer

Eutrophication

Question 18

Which zone in a marine ecosystem receives the most sunlight and supports the most photosynthetic organisms?

Accepted Answer

Photic zone

Question 19

Which equation best describes the drop in oxygen levels during eutrophication?

Accepted Answer

$$	ext{Algae bloom} ightarrow 	ext{Decomposition} ightarrow 	ext{O}_2 	ext{ consumption}$$

Question 20

Which biome is most likely to be endangered due to poaching and population growth, and contains large animals such as lions and zebras?

Accepted Answer

Savanna

Earth’s Diverse Ecosystems: Study Guide for Biology Final Exam

Study Guide - Practice Questions