Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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 3

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.

Question 4

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 5

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 6

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 7

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

Accepted Answer

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

Question 8

A high water vapor pressure deficit indicates that the water vapor content of the air is near saturation.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following may be used to study the uptake of water by plants in a natural ecosystem?

Accepted Answer

A)  non-stable isotope analysis 
B)  radioactive isotope analysis 
C)  14C isotope analysis 
D)  stable isotope analysis 
E)  water isotope analysis 
A)  non-stable isotope analysis 
B)  radioactive isotope analysis 
C)  14C isotope analysis 
D)  stable isotope analysis 
E)  water isotope analysis

Question 10

The evaporative water loss by an organism is high when the

Accepted Answer

A)  vapor pressure deficit is low. 
B)  relative humidity is high. 
C)  water concentration gradient from the organism to the air is reduced. 
D)  actual water vapor density is very low relative to the saturation water vapor density. 
E)  All of the choices are correct. 
A)  vapor pressure deficit is low. 
B)  relative humidity is high. 
C)  water concentration gradient from the organism to the air is reduced. 
D)  actual water vapor density is very low relative to the saturation water vapor density. 
E)  All of the choices are correct.

Question 11

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 12

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 13

Freshwater fish and freshwater mosquitoes must actively excrete ions such as Na+ and Cl-.

Accepted Answer

A) True 
 B)False

Question 14

Aquatic organisms whose ionic concentration of their body fluids is less than that of their surroundings are

Accepted Answer

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

Question 15

In general,a plant found growing in the desert can be expected to have a low shoot to high root biomass ratio.

Accepted Answer

A) True 
 B)False

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

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

In a terrestrial plant,water movement is as follows:

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

Saturation water vapor pressure

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

A high water vapor pressure deficit indicates that the water vapor content of the air is near saturation.

Which of the following may be used to study the uptake of water by plants in a natural ecosystem?

The evaporative water loss by an organism is high when the

The water availability for organisms is determined by

The camel and saguaro cactus both

Freshwater fish and freshwater mosquitoes must actively excrete ions such as Na⁺ and Cl^-.

Aquatic organisms whose ionic concentration of their body fluids is less than that of their surroundings are

In general,a plant found growing in the desert can be expected to have a low shoot to high root biomass ratio.

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

Filters

Exam 6: Water Relations

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

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

In a terrestrial plant,water movement is as follows:

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

Saturation water vapor pressure

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

A high water vapor pressure deficit indicates that the water vapor content of the air is near saturation.

Which of the following may be used to study the uptake of water by plants in a natural ecosystem?

The evaporative water loss by an organism is high when the

The water availability for organisms is determined by

The camel and saguaro cactus both

Freshwater fish and freshwater mosquitoes must actively excrete ions such as Na+ and Cl-.

Aquatic organisms whose ionic concentration of their body fluids is less than that of their surroundings are

In general,a plant found growing in the desert can be expected to have a low shoot to high root biomass ratio.

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

Filters

Freshwater fish and freshwater mosquitoes must actively excrete ions such as Na⁺ and Cl^-.