The best

Which of the following best describes a lotic ecosystem?

• Still water

• Fast paced water

Lentic ecosystems are

• Fast paced water

• Still water

What lentic zone has the most aquatic life?

• Profundal

• Limnetic

• Pelagic

• Littoral

What zone in a lake is typically deep, dark, and lacks photosynthesis?

• Littoral

• Benthic

• Profundal

• Limnetic

The Limnetic zone is best described as-

• Shallow area with rooted plants

• Dark, aphotic zone

• Open water inhabited by plankton

• Bottom sediments inhabited by benthos

6. Which organism group includes free-swimming species like fish?

A. Plankton

B. Nekton

C. Benthos

D. Neuston

• Plankton

• Nekton

• Benthos

• Neuston

7. Organisms that live on or in bottom sediments are known as:

A. Neuston

B. Nekton

C. Plankton

D. Benthos

• Neuston

• Nekton

• Plankton

• Benthos

8. Which of the following is not a characteristic of oligotrophic lakes?

A. Clear water

B. High productivity

C. Deep waters

D. High dissolved oxygen

• Clear water

• High productivity

• Deep waters

• High dissolved oxygen

9. Eutrophic lakes typically have:

A. Low nutrient levels

B. Deep, cold waters

C. Abundant algae and shallow waters

D. High oxygen saturation

• Low nutrient levels

• Deep cold waters

• Abundant algae and shallow waters

• High oxygen saturation

10. Mesotrophic lakes have:

A. No productivity

B. Extremely high algae growth

C. Characteristics between oligotrophic and eutrophic

D. Water depths over 500 meters

• No productivity

• Extremely high algae growth

• Characteristics between oligotrophic and eutrophic

• Water depth over 500 meters