Question 1

Aquatic organisms are usually more streamlined than terrestrial organisms because of water's high

Accepted Answer

A) buoyancy. 
B) viscosity. 
C) surface tension. 
D) density. 
A) buoyancy. 
B) viscosity. 
C) surface tension. 
D) density.

Question 2

The individual atoms of a water molecule are held together by

Accepted Answer

A) covalent bonds. 
B) hydrogen bonds. 
C) ionic bonds. 
D) weak bonds. 
A) covalent bonds. 
B) hydrogen bonds. 
C) ionic bonds. 
D) weak bonds.

Question 3

An organism that lives in a deep marine environment may exhibit the following physical characteristics, EXCEPT

Accepted Answer

A) large eyes. 
B) bioluminescence. 
C) colourful skin pigmentation. 
D) streamlined body. 
A) large eyes. 
B) bioluminescence. 
C) colourful skin pigmentation. 
D) streamlined body.

Question 4

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 5

In the global water cycle, which of the following is considered a "flux"?

Accepted Answer

A) atmosphere 
B) groundwater 
C) precipitation 
D) ocean 
A) atmosphere 
B) groundwater 
C) precipitation 
D) ocean

Question 6

A solution with a pH of 3

Accepted Answer

A) is more alkaline than a solution with a pH of 2. 
B) has a higher concentration of OH⁻ than a solution with a pH of 4. 
C) is neutral. 
D) is more acidic than a solution with a pH of 3.5. 
A) is more alkaline than a solution with a pH of 2. 
B) has a higher concentration of OH⁻ than a solution with a pH of 4. 
C) is neutral. 
D) is more acidic than a solution with a pH of 3.5.

Question 7

Tidal overmixing

Accepted Answer

A) is influenced by density differences of salt and freshwater. 
B) rarely occurs in an estuary. 
C) is primarily influenced by freshwater input from upstream of the estuary. 
D) has minimal effect on the organisms living in an estuary. 
A) is influenced by density differences of salt and freshwater. 
B) rarely occurs in an estuary. 
C) is primarily influenced by freshwater input from upstream of the estuary. 
D) has minimal effect on the organisms living in an estuary.

Question 8

Aquatic ecosystems are divided into two major categories: freshwater and ________.

Accepted Answer

salt water

Question 9

The region of the vertical depth profile where water temperature declines most rapidly is the

Accepted Answer

A) thermocline. 
B) hypolimnion. 
C) epilimnion. 
D) benthic zone. 
A) thermocline. 
B) hypolimnion. 
C) epilimnion. 
D) benthic zone.

Question 10

Daily and seasonal fluctuations in temperature, salinity, and dissolved gases are most extreme in

Accepted Answer

A) the intertidal zone. 
B) sandy beaches. 
C) the estuary. 
D) the open ocean. 
A) the intertidal zone. 
B) sandy beaches. 
C) the estuary. 
D) the open ocean.

Question 11

How do tides form? Explain why tides are not always the same size and why tides vary from place to place.

Accepted Answer

Tides are formed due to the gravitationa

Question 12

Water is at its most dense state 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

Explain how pH of an aquatic environment can influence the organisms that live in or around the water body.

Accepted Answer

The pH of an aquatic environment is a me

Question 14

Describe the water cycle and explain how it arrives at various reservoirs where it is stored.

Accepted Answer

The water cycle, also known as the hydro

Question 15

The movement of molecules from an area of high concentration to an area of low concentration is called ________.

Accepted Answer

The answer of The movement of molecules from an area...

Question 16

Biological diversity in an estuary is generally ________ in spite of high productivity.

Accepted Answer

The answer of Biological diversity in an estuary is generally...

Question 17

The solubility of oxygen ________ as water warms.

Accepted Answer

The answer of The solubility of oxygen ________ as water...

Question 18

Temperatures fluctuate less in aquatic habitats than in terrestrial habitats.

Accepted Answer

A) True 
 B)False

Question 19

In lakes and ponds of temperate latitudes, the upper and bottom layers of water usually turn over during fall.

Accepted Answer

A) True 
 B)False

Question 20

As light enters water, the first wavelength/s absorbed are

Accepted Answer

A) ultraviolet and infrared radiation. 
B) visible red light. 
C) visible blue light and ultraviolet radiation. 
D) visible red light and infrared radiation. 
A) ultraviolet and infrared radiation. 
B) visible red light. 
C) visible blue light and ultraviolet radiation. 
D) visible red light and infrared radiation.

Exam 3: The Aquatic Environment

Aquatic organisms are usually more streamlined than terrestrial organisms because of water's high

The individual atoms of a water molecule are held together by

An organism that lives in a deep marine environment may exhibit the following physical characteristics, EXCEPT

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

In the global water cycle, which of the following is considered a "flux"?

A solution with a pH of 3

Tidal overmixing

Aquatic ecosystems are divided into two major categories: freshwater and ________.

The region of the vertical depth profile where water temperature declines most rapidly is the

Daily and seasonal fluctuations in temperature, salinity, and dissolved gases are most extreme in

How do tides form? Explain why tides are not always the same size and why tides vary from place to place.

Water is at its most dense state at

Explain how pH of an aquatic environment can influence the organisms that live in or around the water body.

Describe the water cycle and explain how it arrives at various reservoirs where it is stored.

The movement of molecules from an area of high concentration to an area of low concentration is called ________.

Biological diversity in an estuary is generally ________ in spite of high productivity.

The solubility of oxygen ________ as water warms.

Temperatures fluctuate less in aquatic habitats than in terrestrial habitats.

In lakes and ponds of temperate latitudes, the upper and bottom layers of water usually turn over during fall.

As light enters water, the first wavelength/s absorbed are

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Ecological Genetics: Adaptation and Natural Selection

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