Question 1

Bluefin tuna and mackerel sharks are considered to be endothermic fish because their

Accepted Answer

A)  lateral swim muscles heat cool venous blood, thereby elevating their body temperature above the surrounding water temperature. 
B)  abdominal swim muscles heat cool venous blood, thereby matching their body temperature to the surrounding water temperature. 
C)  lateral swim muscles cool warm arterial blood, thereby elevating their body temperature above the surrounding water temperature. 
D)  lateral swim muscles heat cool arterial blood, thereby elevating their body temperature above the surrounding water temperature. 
E)  lateral swim muscles heat cool arterial blood, thereby matching their body temperature to the surrounding water temperature. 
A)  lateral swim muscles heat cool venous blood, thereby elevating their body temperature above the surrounding water temperature. 
B)  abdominal swim muscles heat cool venous blood, thereby matching their body temperature to the surrounding water temperature. 
C)  lateral swim muscles cool warm arterial blood, thereby elevating their body temperature above the surrounding water temperature. 
D)  lateral swim muscles heat cool arterial blood, thereby elevating their body temperature above the surrounding water temperature. 
E)  lateral swim muscles heat cool arterial blood, thereby matching their body temperature to the surrounding water temperature. D

Question 2

Research indicates that the broad tailed hummingbird will enter into torpor

Accepted Answer

A)  if a minimum surrounding air temperature is met. 
B)  during a summer drought. 
C)  if their body fat drops below 15%. 
D)  if darkness exceeds daylight hours. 
E)  if insufficient nectar is obtained. 
A)  if a minimum surrounding air temperature is met. 
B)  during a summer drought. 
C)  if their body fat drops below 15%. 
D)  if darkness exceeds daylight hours. 
E)  if insufficient nectar is obtained. E

Question 3

In general,reptiles are considered to be a/an?

Accepted Answer

A)  poikilotherm 
B)  homeotherm 
C)  endotherm 
D)  heterotherm 
E)  two of the choices are correct 
A)  poikilotherm 
B)  homeotherm 
C)  endotherm 
D)  heterotherm 
E)  two of the choices are correct A

Question 4

Metabolic heat (Hm)is the heat

Accepted Answer

A)  energy intake an organism must have for movement. 
B)  released during cellular respiration. 
C)  energy needed in order to undergo cellular respiration. 
D)  energy loss due to evaporation. 
E)  None of the choices are correct. 
A)  energy intake an organism must have for movement. 
B)  released during cellular respiration. 
C)  energy needed in order to undergo cellular respiration. 
D)  energy loss due to evaporation. 
E)  None of the choices are correct.

Question 5

All of the following are components that influence a microclimate except:

Accepted Answer

A)  burrows. 
B)  vegetation. 
C)  ground color. 
D)  topography. 
E)  None of the choices are correct. 
A)  burrows. 
B)  vegetation. 
C)  ground color. 
D)  topography. 
E)  None of the choices are correct.

Question 6

The arctic and alpine cushion plants and the Camnula grasshopper both use __________________ to aid in thermoregulation.

Accepted Answer

A)  countercurrent heat exchange mechanisms 
B)  endothermic methods 
C)  increased water retention 
D)  torpor 
E)  dark pigmentation 
A)  countercurrent heat exchange mechanisms 
B)  endothermic methods 
C)  increased water retention 
D)  torpor 
E)  dark pigmentation

Question 7

An animal will use different ____________________ to maintain an optimum operative temperature range.

Accepted Answer

The answer of An animal will use different ____________________ to...

Question 8

How does the skunk cabbage maintain the temperature of its inflorescence 15$\circ$C to 35$\circ$C above air ambient temperature?

Accepted Answer

A)  metabolizing starch at a very high rate 
B)  orienting the inflorescence perpendicular to the sun's rays 
C)  maintaining a bowl shape which reflects and concentrates solar energy 
D)  maintaining a cushion shape 
E)  extending its inflorescence along the ground to maximize conductive heat gain 
A)  metabolizing starch at a very high rate 
B)  orienting the inflorescence perpendicular to the sun's rays 
C)  maintaining a bowl shape which reflects and concentrates solar energy 
D)  maintaining a cushion shape 
E)  extending its inflorescence along the ground to maximize conductive heat gain

Question 9

Aquatic environments show less temperature variations than terrestrial environments.

Accepted Answer

A) True 
 B)False

Question 10

According to Levins' principle of allocation,adaptation (higher fitness)to one environment results in reduced fitness in another environment.

Accepted Answer

A) True 
 B)False

Question 11

Desert plants can prevent overheating by utilizing all of the following temperature regulating methods except:

Accepted Answer

A)  paraheliotropism. 
B)  decreasing rates of radiative heating. 
C)  decreasing conductive heating. 
D)  increasing evaporative cooling. 
E)  increasing convective cooling. 
A)  paraheliotropism. 
B)  decreasing rates of radiative heating. 
C)  decreasing conductive heating. 
D)  increasing evaporative cooling. 
E)  increasing convective cooling.

Question 12

Mammalian and avian aquatic endotherms use all of the following mechanisms to thermoregulate except:

Accepted Answer

A)  fat 
B)  internal respiratory systems 
C)  fur or feathers 
D)  concurrent heat exchange 
E)  countercurrent heat exchange 
A)  fat 
B)  internal respiratory systems 
C)  fur or feathers 
D)  concurrent heat exchange 
E)  countercurrent heat exchange

Question 13

Dolphins use __________________ to conserve body heat.

Accepted Answer

A)  concurrent heat exchange 
B)  countercurrent heat exchange 
C)  thoracic muscles 
D)  diet 
E)  All of the choices are correct. 
A)  concurrent heat exchange 
B)  countercurrent heat exchange 
C)  thoracic muscles 
D)  diet 
E)  All of the choices are correct.

Question 14

Macroclimates and microclimates vary only slightly from one another in terms of temperature and moisture.

Accepted Answer

A) True 
 B)False

Question 15

It's a hot summer day,and you begin to sweat.What is the method of heat exchange?

Accepted Answer

A)  conduction 
B)  convection 
C)  evaporation 
D)  radiation 
E)  None of the choices are correct. 
A)  conduction 
B)  convection 
C)  evaporation 
D)  radiation 
E)  None of the choices are correct.

Question 16

How are the studies performed on rainbow trout (Oncorhynchus mykiss)and the moss Pleurozium schreberi and the desert shrub Atriplex lentiformis similar?

Accepted Answer

A)  Both studies examine the effects of microclimates. 
B)  Both studies support the concept that species operate within a narrow optimum temperature range. 
C)  Both studies are coupled to enzymatic activity. 
D)  Both studies examine the effects of microclimates and studies support the concept that species operate within a narrow optimum temperature range. 
E)  Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity. 
A)  Both studies examine the effects of microclimates. 
B)  Both studies support the concept that species operate within a narrow optimum temperature range. 
C)  Both studies are coupled to enzymatic activity. 
D)  Both studies examine the effects of microclimates and studies support the concept that species operate within a narrow optimum temperature range. 
E)  Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity.

Question 17

According to Kidron,Barzilay,and Sachs' research on the dune slopes of the Negev Desert,moss would most likely be found on _________ facing slopes due to _________.

Accepted Answer

A)  south; decreased evaporation rates 
B)  south; increased evaporation rates 
C)  north; increased evaporation rates 
D)  north; decreased evaporation rates 
E)  Moss does not grow in the Negev Desert. 
A)  south; decreased evaporation rates 
B)  south; increased evaporation rates 
C)  north; increased evaporation rates 
D)  north; decreased evaporation rates 
E)  Moss does not grow in the Negev Desert.

Question 18

Which of the following survival mechanisms is/are best suited for intense heat and drought?

Accepted Answer

A)  hibernation 
B)  torpor 
C)  estivation 
D)  both hibernation and torpor 
E)  both torpor and estivation 
A)  hibernation 
B)  torpor 
C)  estivation 
D)  both hibernation and torpor 
E)  both torpor and estivation

Question 19

Plants,unlike animals,cannot thermoregulate.

Accepted Answer

A) True 
 B)False

Question 20

Most insects use external sources of heat to achieve their operative temperature range.Heinrich's research on the sphinx moth (Manduca sexta)indicates that some insects can thermoregulate by using their flight muscles and

Accepted Answer

A)  using their blood as a coolant. 
B)  decreasing their metabolic rate. 
C)  possessing an internal respiratory system. 
D)  using a countercurrent heat exchange mechanism. 
E)  using a concurrent heat exchange mechanism. 
A)  using their blood as a coolant. 
B)  decreasing their metabolic rate. 
C)  possessing an internal respiratory system. 
D)  using a countercurrent heat exchange mechanism. 
E)  using a concurrent heat exchange mechanism.

Exam 5: Temperature Relations

Bluefin tuna and mackerel sharks are considered to be endothermic fish because their

Research indicates that the broad tailed hummingbird will enter into torpor

In general,reptiles are considered to be a/an?

Metabolic heat (Hm)is the heat

All of the following are components that influence a microclimate except:

The arctic and alpine cushion plants and the Camnula grasshopper both use __________________ to aid in thermoregulation.

An animal will use different ____________________ to maintain an optimum operative temperature range.

How does the skunk cabbage maintain the temperature of its inflorescence 15 ∘\circ∘ C to 35 ∘\circ∘ C above air ambient temperature?

Aquatic environments show less temperature variations than terrestrial environments.

According to Levins' principle of allocation,adaptation (higher fitness)to one environment results in reduced fitness in another environment.

Desert plants can prevent overheating by utilizing all of the following temperature regulating methods except:

Mammalian and avian aquatic endotherms use all of the following mechanisms to thermoregulate except:

Dolphins use __________________ to conserve body heat.

Macroclimates and microclimates vary only slightly from one another in terms of temperature and moisture.

It's a hot summer day,and you begin to sweat.What is the method of heat exchange?

How are the studies performed on rainbow trout (Oncorhynchus mykiss)and the moss Pleurozium schreberi and the desert shrub Atriplex lentiformis similar?

According to Kidron,Barzilay,and Sachs' research on the dune slopes of the Negev Desert,moss would most likely be found on _________ facing slopes due to _________.

Which of the following survival mechanisms is/are best suited for intense heat and drought?

Plants,unlike animals,cannot thermoregulate.

Most insects use external sources of heat to achieve their operative temperature range.Heinrich's research on the sphinx moth (Manduca sexta)indicates that some insects can thermoregulate by using their flight muscles and

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Water 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

Metabolic heat (H_m)is the heat

How does the skunk cabbage maintain the temperature of its inflorescence 15^$\circ$C to 35^$\circ$C above air ambient temperature?

According to Kidron,Barzilay,and Sachs' research on the dune slopes of the Negev Desert,moss would most likely be found on _ facing slopes due to _.