Aquatic Ecosystems Practice Quiz

Which of the following is included in freshwater wetlands?

• Deserts

• Oceans

• Bogs, marshes, and swamps

• Mountains

What is the optimal dissolved oxygen (DO) level for most fish to live?

• 0 mg/L

• 4.0 mg/L

• 9.5 mg/L

• 14+ mg/L

What are lakes and ponds surrounded by?

• Land

• Mountains

• Deserts

• Oceans

What happens when oceans absorb carbon dioxide?

• The pH of water increases

• Carbonic acid is produced, lowering the pH

• The water becomes more alkaline

• The pH remains unchanged

Which zone is commonly called the "seashore" and is closest to the shore?

• Intertidal Zone

• Coastal Ocean

• Open Ocean

• Abyssal Zone

Which of the following is an example of a coastal ocean ecosystem?

• Desert dunes

• Kelp forests

• Mountain peaks

• Grasslands

What do ecosystems consist of?

• Only living organisms

• Only non-living elements

• All organisms and the physical environment with which they interact

• Only aquatic environments

What types of ecosystems can aquatic ecosystems be?

• Terrestrial or aerial

• Marine or freshwater

• Desert or forest

• Urban or rural

What type of water movement is associated with rivers, streams, and springs?

• Lotic (moving)

• Lentic (still)

• Static

• Turbulent

What is the term for the amount of oxygen dissolved in water?

• Dissolved nitrogen (DN)

• Dissolved carbon dioxide (DCO2)

• Dissolved oxygen (DO)

• Dissolved hydrogen (DH)