Question 1

During summer,the amount of oxygen in the water is greatest at the bottom of ponds and lakes.

Accepted Answer

A) True 
 B)False

Question 2

Molecules spontaneously move from an area of higher concentration to an area of lower concentration in a process known as

Accepted Answer

A) conduction. 
B) solution. 
C) evaporation. 
D) diffusion. 
A) conduction. 
B) solution. 
C) evaporation. 
D) diffusion.

Question 3

A scientist measures the temperature of a lake at various depths and finds very little variation between temperatures at the surface and at the bottom of the lake.The temperature measurements were most likely taken in a

Accepted Answer

A) temperate lake during summer. 
B) temperate lake during winter. 
C) tropical lake during summer. 
D) tropical lake during winter. 
A) temperate lake during summer. 
B) temperate lake during winter. 
C) tropical lake during summer. 
D) tropical lake during winter.

Question 4

The region of the vertical depth profile where the temperature declines most rapidly is called the ________.

Accepted Answer

The answer of The region of the vertical depth profile...

Question 5

You are SCUBA diving in deep water and accidentally cut yourself.Your blood appears blue.Why?

Accepted Answer

A) Blue light is filtered out at this depth. 
B) Your blood changes color due to the pressure at this depth. 
C) Red light is filtered out at this depth. 
D) Oxygen has been pressurized out of your blood at this depth. 
A) Blue light is filtered out at this depth. 
B) Your blood changes color due to the pressure at this depth. 
C) Red light is filtered out at this depth. 
D) Oxygen has been pressurized out of your blood at this depth.

Question 6

Why do mountain streams have rocky bottoms?

Accepted Answer

A) Large amounts of snow reduce sediment erosion. 
B) Cold temperatures reduce sediment accumulation 
C) This is the result of a lack of sediment at high altitudes. 
D) Steep gradients cause high velocity flows. 
A) Large amounts of snow reduce sediment erosion. 
B) Cold temperatures reduce sediment accumulation 
C) This is the result of a lack of sediment at high altitudes. 
D) Steep gradients cause high velocity flows.

Question 7

You notice mayfly larvae trying to emerge from a stream being slowed down when they reach the surface.Why might this be?

Accepted Answer

A) Because of the surface tension of the water. 
B) Because of the colder temperature at surface. 
C) Because of less oxygen at the surface. 
D) Because of higher flows at surface. 
A) Because of the surface tension of the water. 
B) Because of the colder temperature at surface. 
C) Because of less oxygen at the surface. 
D) Because of higher flows at surface.

Question 8

Most of Earth's water resides in

Accepted Answer

A) the oceans. 
B) the polar ice caps and glaciers. 
C) freshwater lakes,ponds,rivers,and streams. 
D) groundwater. 
A) the oceans. 
B) the polar ice caps and glaciers. 
C) freshwater lakes,ponds,rivers,and streams. 
D) groundwater.

Question 9

The total amount of evaporating water from the surfaces of the ground and vegetation is called ________.

Accepted Answer

The answer of The total amount of evaporating water from...

Question 10

Water takes longer than air to warm up or cool off because of water's high

Accepted Answer

A) specific heat. 
B) viscosity. 
C) surface tension. 
D) density. 
A) specific heat. 
B) viscosity. 
C) surface tension. 
D) density.

Question 11

About 75% of the Earth's surface is covered by

Accepted Answer

A) water. 
B) bare ground. 
C) forest. 
D) grassland. 
A) water. 
B) bare ground. 
C) forest. 
D) grassland.

Question 12

The density of water is greatest at

Accepted Answer

A) -4°C. 
B) 0°C. 
C) 4°C. 
D) 100°C. 
A) -4°C. 
B) 0°C. 
C) 4°C. 
D) 100°C.

Question 13

Upwelling occurs in the equatorial waters of the ocean.

Accepted Answer

A) True 
 B)False

Question 14

________ solutions are those that have a higher concentration of OH- (hydroxyl ions)than H+ ions.

Accepted Answer

The answer of ________ solutions are those that have a...

Question 15

Aquatic organisms are unable to tolerate low pH conditions mainly because acidic waters contain high concentrations of toxic

Accepted Answer

A) sodium. 
B) chlorine. 
C) aluminum. 
D) carbon dioxide. 
A) sodium. 
B) chlorine. 
C) aluminum. 
D) carbon dioxide.

Question 16

Salinity within an estuary is greatest in

Accepted Answer

A) surface water at high tide. 
B) surface water at low tide. 
C) deep water at high tide. 
D) deep water at low tide. 
A) surface water at high tide. 
B) surface water at low tide. 
C) deep water at high tide. 
D) deep water at low tide.

Question 17

The evaporation of water from internal surfaces of leaves,stems,and other living parts of a plant is called

Accepted Answer

A) osmosis. 
B) transpiration. 
C) diffusion. 
D) infiltration. 
A) osmosis. 
B) transpiration. 
C) diffusion. 
D) infiltration.

Question 18

Tides are highest and lowest during a spring tide,when the Sun and Moon are aligned with the Earth.

Accepted Answer

A) True 
 B)False

Question 19

The depth of a thermocline is directly influenced by all the following factors,except

Accepted Answer

A) wind speed. 
B) wave action. 
C) input of solar radiation. 
D) influx of water. 
A) wind speed. 
B) wave action. 
C) input of solar radiation. 
D) influx of water.

Question 20

The thermocline is permanent in tropical bodies of water and seasonal in temperate bodies of water.

Accepted Answer

A) True 
 B)False

Exam 3: The Aquatic Environment

During summer,the amount of oxygen in the water is greatest at the bottom of ponds and lakes.

Molecules spontaneously move from an area of higher concentration to an area of lower concentration in a process known as

A scientist measures the temperature of a lake at various depths and finds very little variation between temperatures at the surface and at the bottom of the lake.The temperature measurements were most likely taken in a

The region of the vertical depth profile where the temperature declines most rapidly is called the ________.

You are SCUBA diving in deep water and accidentally cut yourself.Your blood appears blue.Why?

Why do mountain streams have rocky bottoms?

You notice mayfly larvae trying to emerge from a stream being slowed down when they reach the surface.Why might this be?

Most of Earth's water resides in

The total amount of evaporating water from the surfaces of the ground and vegetation is called ________.

Water takes longer than air to warm up or cool off because of water's high

About 75% of the Earth's surface is covered by

The density of water is greatest at

Upwelling occurs in the equatorial waters of the ocean.

________ solutions are those that have a higher concentration of OH- (hydroxyl ions)than H+ ions.

Aquatic organisms are unable to tolerate low pH conditions mainly because acidic waters contain high concentrations of toxic

Salinity within an estuary is greatest in

The evaporation of water from internal surfaces of leaves,stems,and other living parts of a plant is called

Tides are highest and lowest during a spring tide,when the Sun and Moon are aligned with the Earth.

The depth of a thermocline is directly influenced by all the following factors,except

The thermocline is permanent in tropical bodies of water and seasonal in temperate bodies of water.

The Nature of Ecology

Climate

The Terrestrial Environment

Adaptation and Natural Selection

Plant Adaptations to the Environment

Animal Adaptations to the Environment

Properties of Populations

Population Growth

Life History

Intraspecific Population Regulation

Species Interactions, population Dynamics, and Natural Selection

Interspecific Competition

Predation

Parasitism and Mutualism

Community Structure

Factors Influencing the Structure of Communities

Community Dynamics

Landscape Dynamics

Ecosystem Energetics

Decomposition and Nutrient Cycling

Biogeochemical Cycles

Terrestrial Ecosystems

Aquatic Ecosystems

Coastal and Wetland Ecosystems

Large-Scale Patterns of Biological Diversity

The Ecology of Climate Change

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