Aquatic Science Unit 1 Test

What process occurs in a freshwater lake during the spring and fall?

• Stratification

• Eutrophication

• Thermocline

• Turnover

Tags

NGSS.MS-ESS2-4

Which of the following is not a plant adaptation in an aquatic ecosystem?

• Waxy coating

• Additional pigment for optimal photosynthesis

• Flexible stem

• Air pockets in tissue

Tags

NGSS.MS-LS1-4

What term describes the temperature profile of a freshwater lake during the winter months when the temperature is the same throughout the lake?

• Thermocline

• Isothermic

• Hypolimnetic

• Winter stratification

Where are five of the largest glacial lakes located?

• Russia

• The Great Lakes System

• The Amazon Basin

• Iceland

What are the two most common dissolved gases in a freshwater lake?

• Carbon dioxide and nitrogen dioxide

• Oxygen and nitrogen

• Oxygen and carbon dioxide

• Nitrogen and carbon

Why are eutrophic lakes productive initially but eventually unproductive?

• Because they have such a high diversity of plant life and the plants can't compete for resources

• Because they are very shallow and cannot support much plant life so plants eventually die off

• Because the excess nutrients promote plant growth initially, but eventually there are too many plants and they start to die off

• Because they are very low in nutrients and can't support a high diversity of aquatic plants

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What are the two photic zones?

• Limnetic and profundal

• Lotic and Lentic

• Littoral and limnetic

• The epilimnion and hypolimnion

Which type of lake is considered to be the most productive (has the most nutrients)?

• Mesotrophic

• Heterotrophic

• Oligotrophic

• Eutrophic

Which lake zone includes shoreline vegetation and macroinvertebrates?

• Littoral

• Benthic

• Profundal

• Epilimnetic

Which of the macroinvertebrates are the most tolerant of pollution in the water?

• Diptera (True flies)

• Tricoptera (Caddis flies)

• Hemiptera (True bugs)

• Ephemeroptera (Mayflies)