Question 1

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. D

Question 2

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

Accepted Answer

osmosis

Question 3

Water flows from the soil into the plant roots because the water potential of the soil is higher than the water potential of the roots.

Accepted Answer

A) True 
 B)False  True

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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 6

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

Accepted Answer

A) True 
 B)False

Question 7

Desert kangaroo rats meet a portion of their water requirements through the metabolic processing of their food intake, but they still need to drink liquid water in order to survive.

Accepted Answer

A) True 
 B)False

Question 8

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 9

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 10

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 11

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 12

Aquatic organisms whose body fluids equal that of their surroundings are

Accepted Answer

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

Question 13

Relative humidity = [ ________ / saturation water vapor density] x 100

Accepted Answer

The answer of Relative humidity = [ ________ / saturation...

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

The Sonoran desert cicada emits its buzzing call only when temperatures are below 10 ºC, when all other animals have taken refuge from the cold.

Accepted Answer

A) True 
 B)False

Question 16

Most water loss in terrestrial animals is due to evaporation.

Accepted Answer

A) True 
 B)False

Question 17

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

Accepted Answer

aerobic ce

Question 18

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 19

In order to survive in the desert, a camel will employ which of the following mechanisms?

Accepted Answer

A)  Face away from sun 
B)  Store water in its hump 
C)  Shed its fur 
D)  Allow its body temperature to rise 
E)  All of the choices are correct. 
A)  Face away from sun 
B)  Store water in its hump 
C)  Shed its fur 
D)  Allow its body temperature to rise 
E)  All of the choices are correct.

Question 20

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.

Exam 6: Water Relations

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

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

Water flows from the soil into the plant roots because the water potential of the soil is higher than the water potential of the roots.

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

The water availability for organisms is determined by

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

Desert kangaroo rats meet a portion of their water requirements through the metabolic processing of their food intake, but they still need to drink liquid water in order to survive.

Movement of water ________ its concentration gradient is called ________.

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

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

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

Aquatic organisms whose body fluids equal that of their surroundings are

Relative humidity = [ ________ / saturation water vapor density] x 100

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

The Sonoran desert cicada emits its buzzing call only when temperatures are below 10 ºC, when all other animals have taken refuge from the cold.

Most water loss in terrestrial animals is due to evaporation.

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

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

In order to survive in the desert, a camel will employ which of the following mechanisms?

Water vapor is continuously added to the air by

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

Social 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^-.

Movement of water its concentration gradient is called .