A man, shipwrecked at sea, spends 12 hours floating in the ocean before washing up on the shore of a deserted island. The shipwrecked man has just finished collecting shellfish from the ocean and is lying on the beach absorbing solar radiation. A very large sea turtle crawls out of the ocean and suns itself on the same beach. Both individuals bask in the sun for 7 hours. If the temperature of the ocean is 10F1F1F1S1F1F1F10C and the temperature of the sand is 30F1F1F1S1F1F1F10C, how would you expect sand temperature to affect body temperature and how would body temperature change over time for both individuals? Create a graph that shows this pattern. Label the x and y axes. Draw a line that shows the expected change in temperature of the person over time and the expected change in temperature of the turtle over time. Label both lines.

The man's body temperature should initia

Refer to the figure. In the figure, as F1F1F1S soil declines over five days, what happens to F1F1F1S leaf at night?

A) It consistently drops lower than F1F1F1S soil. B) It consistently is lower than F1F1F1S stem. C) It takes longer to equilibrate with F1F1F1S soil. D) Stomates stay open longer. A) It consistently drops lower than F1F1F1S soil. B) It consistently is lower than F1F1F1S stem. C) It takes longer to equilibrate with F1F1F1S soil. D) Stomates stay open longer.

Exam 4: Coping With Environmental Variation:

When a plant is using transpiration to cool off during the day, its stomates are ___ and its water potential is _ negative than that of the soil. At night, the plant's water potential will be _____ that of the soil (assuming that the soil is receiving sufficient moisture).

(Multiple Choice)

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Question 41

A mouse is sitting in the sun. Solar radiation provides a net intake of energy of 30 milliwatts per minute, and infrared radiation provides an additional net input of 8 milliwatts per minute. Conductive and convective outputs are a combined 55 milliwatts per minute. There is no detectable change in heat from evaporation. Assuming that the mouse is maintaining a constant temperature, how much heat must it be generating per minute?

(Multiple Choice)

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Question 42

System 1 has a water potential of ‒65 MPa. System 2 has a water potential of ‒45 MPa. System 3 has a water potential of 15 MPa. Water will flow from system _ to system _.

(Multiple Choice)

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Question 43

A man, shipwrecked at sea, spends 12 hours floating in the ocean before washing up on the shore of a deserted island. The shipwrecked man has just finished collecting shellfish from the ocean and is lying on the beach absorbing solar radiation. A very large sea turtle crawls out of the ocean and suns itself on the same beach. Both individuals bask in the sun for 7 hours. If the temperature of the ocean is 10C and the temperature of the sand is 30C, how would you expect sand temperature to affect body temperature and how would body temperature change over time for both individuals? Create a graph that shows this pattern. Label the x and y axes. Draw a line that shows the expected change in temperature of the person over time and the expected change in temperature of the turtle over time. Label both lines.

(Essay)

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Question 44

Refer to the figure. - The figure shows the distribution of aspen in North America and the factors that limit it. What is the most common factor limiting aspen's distribution along the western edge of its range in Canada?

(Multiple Choice)

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Question 45

In which environment is transpiration likely to make the greatest contributor to the cooling of a leaf?

(Multiple Choice)

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Question 46

If the temperature of a plant is 18°C and the ambient temperature is 14°C, which process will result in a net input of heat from the air to the plant?

(Multiple Choice)

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Question 47

Refer to the figure. In the figure, as _soil declines over five days, what happens to 11ef0cf8_4c2f_5de3_baff_f734b72c3246_TBO1115_11_leaf at night?

(Multiple Choice)

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Question 48

Compared with birds, amphibians have a _ maximum resistance to and a _ maximum tolerance for water loss.

(Multiple Choice)

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Question 49

Assuming that the body shape of an animal is at least somewhat spherical, a considerable decrease in body size would _ the surface area-to-volume ratio, and the ability to exchange heat with the environment would _.

(Multiple Choice)

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Question 50

Which statement about kangaroo rats and their adaptations to the desert climate is false?

(Multiple Choice)

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Question 51

Which statement best supports the speculation that large dinosaurs may have had some degree of endothermy?

(Multiple Choice)

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Question 52

Which statement best explains why tropical plants may lose function at temperatures as high as 10°C, while alpine plants can function at temperatures close to freezing?

(Multiple Choice)

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Question 53

Which statement about adaptation is true?

(Multiple Choice)

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Question 54

Consider a plant that is transpiring. The highest water potential is in the _ and the lowest water potential is in the _.

(Multiple Choice)

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Question 55

You have just moved from Florida to Alaska and you are having trouble adjusting to this new, colder climate. What is one thing you can do to acclimate to the cold without relying on technology, tools, heat, shelter, or extra clothing? Describe how and why this change might help you acclimate to the colder temperatures. (You cannot go into torpor or hibernation, or migrate back to Florida!)

(Essay)

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Question 56

In the summer, leaves of E. farinosa show _ pubescence than in the winter. The change in pubescence is an example of _.

(Multiple Choice)

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Question 57

System 1 has a water potential of ‒2 MPa. System 2 has a water potential of -5 MPa. System 3 has a water potential of 0 MPa. Water will flow from system _ to system _.

(Multiple Choice)

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Question 58

Which sequence represents the correct ranking (from highest to lowest) of the metabolic rates of a 35-gram mouse, a 150-gram ectothermic lizard, and a 20-kg dog?

(Multiple Choice)

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Question 59

Refer to the figure. -Plant ecophysiologists often measure the water potential of a plant at midnight to understand plant-soil-water relationships. If an investigator found that _stem was -2.0 MPa as shown in the figure, which statement would also be true?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 74

Exam 4: Coping With Environmental Variation:

When a plant is using transpiration to cool off during the day, its stomates are _______ and its water potential is _______ negative than that of the soil. At night, the plant's water potential will be _______ that of the soil (assuming that the soil is receiving sufficient moisture).

System 1 has a water potential of ‒65 MPa. System 2 has a water potential of ‒45 MPa. System 3 has a water potential of 15 MPa. Water will flow from system _______ to system _______.

Refer to the figure. - The figure shows the distribution of aspen in North America and the factors that limit it. What is the most common factor limiting aspen's distribution along the western edge of its range in Canada?

In which environment is transpiration likely to make the greatest contributor to the cooling of a leaf?

If the temperature of a plant is 18°C and the ambient temperature is 14°C, which process will result in a net input of heat from the air to the plant?

Refer to the figure. In the figure, as soil declines over five days, what happens to 11ef0cf8_4c2f_5de3_baff_f734b72c3246_TBO1115_11leaf at night?

Compared with birds, amphibians have a _______ maximum resistance to and a _______ maximum tolerance for water loss.

Assuming that the body shape of an animal is at least somewhat spherical, a considerable decrease in body size would _______ the surface area-to-volume ratio, and the ability to exchange heat with the environment would _______.

Which statement about kangaroo rats and their adaptations to the desert climate is false?

Which statement best supports the speculation that large dinosaurs may have had some degree of endothermy?

Which statement best explains why tropical plants may lose function at temperatures as high as 10°C, while alpine plants can function at temperatures close to freezing?

Which statement about adaptation is true?

Consider a plant that is transpiring. The highest water potential is in the _______ and the lowest water potential is in the _______.

In the summer, leaves of E. farinosa show _______ pubescence than in the winter. The change in pubescence is an example of _______.

System 1 has a water potential of ‒2 MPa. System 2 has a water potential of -5 MPa. System 3 has a water potential of 0 MPa. Water will flow from system _______ to system _______.

Which sequence represents the correct ranking (from highest to lowest) of the metabolic rates of a 35-gram mouse, a 150-gram ectothermic lizard, and a 20-kg dog?

Refer to the figure. -Plant ecophysiologists often measure the water potential of a plant at midnight to understand plant-soil-water relationships. If an investigator found that stem was -2.0 MPa as shown in the figure, which statement would also be true?

The Web of Life

The Physical Environment

The Biosphere

Coping With Environmental Variation: Energy

Evolution and Ecology

Life History

Behavioral Ecology

Population Distribution and Abundance

Population Dynamics

Population Growth and Regulation

Predation

Parasitism

Competition

Mutualism and Commensalism

The Nature of Communities

Change in Communities

Biogeography

Species Diversity in Communities

Production

Energy Flow and Food Webs

Nutrient Supply and Cycling

Conservation Biology

Landscape Ecology and Ecosystem Management

Global Ecology

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When a plant is using transpiration to cool off during the day, its stomates are ___ and its water potential is _ negative than that of the soil. At night, the plant's water potential will be _____ that of the soil (assuming that the soil is receiving sufficient moisture).

System 1 has a water potential of ‒65 MPa. System 2 has a water potential of ‒45 MPa. System 3 has a water potential of 15 MPa. Water will flow from system _ to system _.

Refer to the figure. In the figure, as _soil declines over five days, what happens to 11ef0cf8_4c2f_5de3_baff_f734b72c3246_TBO1115_11_leaf at night?

Compared with birds, amphibians have a _ maximum resistance to and a _ maximum tolerance for water loss.

Assuming that the body shape of an animal is at least somewhat spherical, a considerable decrease in body size would _ the surface area-to-volume ratio, and the ability to exchange heat with the environment would _.

Consider a plant that is transpiring. The highest water potential is in the _ and the lowest water potential is in the _.

In the summer, leaves of E. farinosa show _ pubescence than in the winter. The change in pubescence is an example of _.

System 1 has a water potential of ‒2 MPa. System 2 has a water potential of -5 MPa. System 3 has a water potential of 0 MPa. Water will flow from system _ to system _.

Refer to the figure. -Plant ecophysiologists often measure the water potential of a plant at midnight to understand plant-soil-water relationships. If an investigator found that _stem was -2.0 MPa as shown in the figure, which statement would also be true?