Question 1

In a terrestrial plant, water movement is as follows:

Accepted Answer

A)  from less negative water potential to a more negative water potential. 
B)  from more negative water potential to a less negative water potential. 
C)  from less positive water potential to a more positive water potential. 
D)  from zero water potential to a more negative water potential. 
E)  from zero water potential to a more positive water potential. 
A)  from less negative water potential to a more negative water potential. 
B)  from more negative water potential to a less negative water potential. 
C)  from less positive water potential to a more positive water potential. 
D)  from zero water potential to a more negative water potential. 
E)  from zero water potential to a more positive water potential. A

Question 2

A(n) ___________ marine fish gains water through osmosis and loses salts through diffusion.

Accepted Answer

A)  hyperosmotic 
B)  hypoosmotic 
C)  isoosmotic 
D)  osmotic 
E)  None of the choices are correct. 
A)  hyperosmotic 
B)  hypoosmotic 
C)  isoosmotic 
D)  osmotic 
E)  None of the choices are correct. A

Question 3

Water vapor is continuously added to the air by

Accepted Answer

A)  transpiration. 
B)  evaporation. 
C)  both transpiration and evaporation. 
D)  precipitation. 
E)  both evaporation and precipitation. 
A)  transpiration. 
B)  evaporation. 
C)  both transpiration and evaporation. 
D)  precipitation. 
E)  both evaporation and precipitation. C

Question 4

In general, desert organisms try to decrease their rate of evaporative cooling in order to conserve water. Which of the following desert organisms sweats?

Accepted Answer

A)  camel 
B)  cactus 
C)  cicada 
D)  scorpion 
E)  tiger beetle 
A)  camel 
B)  cactus 
C)  cicada 
D)  scorpion 
E)  tiger beetle

Question 5

The camel and saguaro cactus both

Accepted Answer

A)  acquire massive amounts of water when water is available. 
B)  allow their internal temperature to rise. 
C)  reduce surface area exposed to direct sunlight. 
D)  reflect sunlight with dense hairs. 
E)  All of the choices are correct. 
A)  acquire massive amounts of water when water is available. 
B)  allow their internal temperature to rise. 
C)  reduce surface area exposed to direct sunlight. 
D)  reflect sunlight with dense hairs. 
E)  All of the choices are correct.

Question 6

If a person were to place a marine fish into a fresh water lake, water would diffuse

Accepted Answer

A)  up its concentration gradient and enter the fish. 
B)  down its concentration gradient and enter the fish. 
C)  down its concentration gradient and exit the fish. 
D)  up its concentration gradient and exit the fish. 
E)  None of the choices are correct. 
A)  up its concentration gradient and enter the fish. 
B)  down its concentration gradient and enter the fish. 
C)  down its concentration gradient and exit the fish. 
D)  up its concentration gradient and exit the fish. 
E)  None of the choices are correct.

Question 7

Aquatic organisms whose ionic concentration of their body fluids exceeds that of their surroundings are

Accepted Answer

A)  hyperosmotic. 
B)  hypoosmotic. 
C)  isoosmotic. 
D)  osmotic. 
E)  None of the choices are correct. 
A)  hyperosmotic. 
B)  hypoosmotic. 
C)  isoosmotic. 
D)  osmotic. 
E)  None of the choices are correct.

Question 8

In general, a plant located in an arid climate will possess all of the following in order to prevent water loss except:

Accepted Answer

A)  waxy coating. 
B)  decreased root biomass. 
C)  decreased shoot biomass. 
D)  increased root length. 
E)  reduces leaf size. 
A)  waxy coating. 
B)  decreased root biomass. 
C)  decreased shoot biomass. 
D)  increased root length. 
E)  reduces leaf size.

Question 9

In order to reduce heat gain, a camel will face into the sun.

Accepted Answer

A) True 
 B)False

Question 10

Windy days will decrease a plant's evaporative water loss.

Accepted Answer

A) True 
 B)False

Question 11

Saturation water vapor pressure

Accepted Answer

A)  increases with temperature. 
B)  decreases with temperature. 
C)  parallels vapor pressure density. 
D)  both increases with temperature and parallels vapor pressure density. 
E)  both decreases with temperature and parallels vapor pressure density. 
A)  increases with temperature. 
B)  decreases with temperature. 
C)  parallels vapor pressure density. 
D)  both increases with temperature and parallels vapor pressure density. 
E)  both decreases with temperature and parallels vapor pressure density.

Question 12

The potential for evaporative water loss by terrestrial organisms
3-15-2013

Accepted Answer

A)  decreases with increased vapor pressure deficit. 
B)  increases with decreased vapor pressure deficit. 
C)  increases with increased vapor pressure deficit. 
D)  None of the choices are correct. 
A)  decreases with increased vapor pressure deficit. 
B)  increases with decreased vapor pressure deficit. 
C)  increases with increased vapor pressure deficit. 
D)  None of the choices are correct.

Question 13

A desert scorpion will use all of the following mechanisms in order to survive in the desert except:

Accepted Answer

A)  waterproof cuticle. 
B)  nocturnal behavior. 
C)  burrowing. 
D)  decreased metabolic rate. 
E)  None of the choices are correct. 
A)  waterproof cuticle. 
B)  nocturnal behavior. 
C)  burrowing. 
D)  decreased metabolic rate. 
E)  None of the choices are correct.

Question 14

Movement of water _____________ its concentration gradient is called ________________.

Accepted Answer

A)  down; diffusion 
B)  up; diffusion 
C)  down; active transport 
D)  up; osmosis 
E)  None of the choices are correct. 
A)  down; diffusion 
B)  up; diffusion 
C)  down; active transport 
D)  up; osmosis 
E)  None of the choices are correct.

Question 15

The diffusion of water across a differentially permeable membrane is called _______.

Accepted Answer

The answer of The diffusion of water across a differentially...

Question 16

All of the following contribute to the movement of water in a terrestrial plant except:

Accepted Answer

A)  transpiration. 
B)  drying power of the sun. 
C)  hydrogen bonding. 
D)  water potential. 
E)  None of the choices are correct. 
A)  transpiration. 
B)  drying power of the sun. 
C)  hydrogen bonding. 
D)  water potential. 
E)  None of the choices are correct.

Question 17

Water conservation mechanisms used by plants adapted to dry conditions include

Accepted Answer

A)  dropping leaves. 
B)  thick leaves. 
C)  fewer stomata. 
D)  dormancy. 
E)  All of the choices are correct. 
A)  dropping leaves. 
B)  thick leaves. 
C)  fewer stomata. 
D)  dormancy. 
E)  All of the choices are correct.

Question 18

The water availability for organisms is determined by

Accepted Answer

A)  internal dissolved ion concentrations. 
B)  external dissolved ion concentrations. 
C)  movement of water down its concentration gradient. 
D)  movement of water up its concentration gradient. 
E)  None of the choices are correct. 
A)  internal dissolved ion concentrations. 
B)  external dissolved ion concentrations. 
C)  movement of water down its concentration gradient. 
D)  movement of water up its concentration gradient. 
E)  None of the choices are correct.

Question 19

A cicada will use which of the following mechanisms in order to survive hot, dry conditions of the desert?

Accepted Answer

A)  nocturnal behavior 
B)  burrowing 
C)  torpor 
D)  sweating 
E)  All of the choices are correct. 
A)  nocturnal behavior 
B)  burrowing 
C)  torpor 
D)  sweating 
E)  All of the choices are correct.

Question 20

Metabolic water is the water that is released by the process of ___________________.

Accepted Answer

aerobic ce

Exam 6: Water Relations

In a terrestrial plant, water movement is as follows:

A(n) ___________ marine fish gains water through osmosis and loses salts through diffusion.

Water vapor is continuously added to the air by

In general, desert organisms try to decrease their rate of evaporative cooling in order to conserve water. Which of the following desert organisms sweats?

The camel and saguaro cactus both

If a person were to place a marine fish into a fresh water lake, water would diffuse

Aquatic organisms whose ionic concentration of their body fluids exceeds that of their surroundings are

In general, a plant located in an arid climate will possess all of the following in order to prevent water loss except:

In order to reduce heat gain, a camel will face into the sun.

Windy days will decrease a plant's evaporative water loss.

Saturation water vapor pressure

The potential for evaporative water loss by terrestrial organisms 3-15-2013

A desert scorpion will use all of the following mechanisms in order to survive in the desert except:

Movement of water _____________ its concentration gradient is called ________________.

The diffusion of water across a differentially permeable membrane is called _______.

All of the following contribute to the movement of water in a terrestrial plant except:

Water conservation mechanisms used by plants adapted to dry conditions include

The water availability for organisms is determined by

A cicada will use which of the following mechanisms in order to survive hot, dry conditions of the desert?

Metabolic water is the water that is released by the process of ___________________.

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Energy and Nutrient Relations

Socail Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Life Histories

Competition

Exploitative Interactions Predation, Herbivory, Parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

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Movement of water _ its concentration gradient is called ____.