Question 1

_______ is characterized by unusually cold ocean temperatures in the eastern Pacific.

Accepted Answer

La Niña

Question 2

Choose the best definition of the term "ecology."

Accepted Answer

A) Ecology is the study of animals in their habitat. 
B) Ecology is the study of plants and animals in their ecosystems. 
C) Ecology is the study of communities of organisms. 
D) Ecology is the study of interactions of organisms with each other and with their habitat. 
A) Ecology is the study of animals in their habitat. 
B) Ecology is the study of plants and animals in their ecosystems. 
C) Ecology is the study of communities of organisms. 
D) Ecology is the study of interactions of organisms with each other and with their habitat. D

Question 3

The total amount of energy fixed by photosynthetic organisms minus the energy used in their own metabolic activities is:

Accepted Answer

A) primary productivity 
B) secondary productivity 
C) net primary productivity 
D) net secondary productivity 
A) primary productivity 
B) secondary productivity 
C) net primary productivity 
D) net secondary productivity C

Question 4

All of the following are correct about oligotrophic lakes except:

Accepted Answer

A) they have an abundance of minerals and organic material 
B) they are often deeper than eutrophic lakes 
C) their deep water is rich in oxygen 
D) they are highly susceptible to pollution from fertilizer runoff 
E) they are highly susceptible to detergent and sewage contamination 
A) they have an abundance of minerals and organic material 
B) they are often deeper than eutrophic lakes 
C) their deep water is rich in oxygen 
D) they are highly susceptible to pollution from fertilizer runoff 
E) they are highly susceptible to detergent and sewage contamination

Question 5

When you eat a hamburger,you are eating at which trophic level?

Accepted Answer

A) Level 1 
B) Level 2 
C) Level 3 
D) Level 4 
A) Level 1 
B) Level 2 
C) Level 3 
D) Level 4

Question 6

Where is an estuary found?

Accepted Answer

A) Below the top 300 meters of the sea where there is no light. 
B) At the top 100 meters of the sea. 
C) It is a small temporary pond of water. 
D) It is the water that forms at the mouth of a river where it meets the sea. 
A) Below the top 300 meters of the sea where there is no light. 
B) At the top 100 meters of the sea. 
C) It is a small temporary pond of water. 
D) It is the water that forms at the mouth of a river where it meets the sea.

Question 7

Loss of water from the leaves of plants occurs mostly via a process known as:

Accepted Answer

A) transpiration 
B) evaporation 
C) dehydration 
D) guttation 
A) transpiration 
B) evaporation 
C) dehydration 
D) guttation

Question 8

Microscopic organisms floating on the surface of the ocean make up the ___________________.

Accepted Answer

The answer of Microscopic organisms floating on the surface of...

Question 9

When the energy flow through an ecosystem is measured at each trophic level,__________ of the available energy passes from one level to the next.

Accepted Answer

A) 1% to 2% 
B) 5% to 20% 
C) 25% to 35% 
D) 36% to 45% 
E) 46% to 55% 
A) 1% to 2% 
B) 5% to 20% 
C) 25% to 35% 
D) 36% to 45% 
E) 46% to 55%

Question 10

Biological magnification can lead to high levels of mercury and lead in organisms higher in the food chain.

Accepted Answer

A) True 
 B)False

Question 11

The moisture that travels up from the plants into the atmosphere falls back to the Earth as rain.

Accepted Answer

A) True 
 B)False

Question 12

Describe the environmental water cycle.

Accepted Answer

Water vapor evaporates from the surface

Question 13

Devise an example of a food chain with four links.

Accepted Answer

Sure! Here's an example of a f

Question 14

The community plus its habitat make up an ____________________.

Accepted Answer

The answer of The community plus its habitat make up...

Question 15

Plants are the ____________ in the food chain in an ecosystem.

Accepted Answer

The answer of Plants are the ____________ in the food...

Question 16

Several food chains woven together comprise a ______________.

Accepted Answer

The answer of Several food chains woven together comprise a...

Question 17

All of the following are examples of detritivores except:

Accepted Answer

A) worms 
B) vultures 
C) fungi 
D) arthropods 
A) worms 
B) vultures 
C) fungi 
D) arthropods

Question 18

Characterized by permafrost and low,shrubby plants,_______ can be found nearest the poles.

Accepted Answer

A) tundra 
B) taiga 
C) temperate deciduous forests 
D) chaparral 
A) tundra 
B) taiga 
C) temperate deciduous forests 
D) chaparral

Question 19

The tropics are warmer than the temperate regions because:

Accepted Answer

A) there is less wind there to cool it 
B) they are at a higher altitude and closer to the Sun 
C) the Sun's rays strike at a direct angle 
D) they are closer to the Moon 
E) the Sun's rays strike at an oblique angle 
A) there is less wind there to cool it 
B) they are at a higher altitude and closer to the Sun 
C) the Sun's rays strike at a direct angle 
D) they are closer to the Moon 
E) the Sun's rays strike at an oblique angle

Question 20

Phosphorus is an essential element in all living things and is a component of:

Accepted Answer

A) carbohydrates 
B) nearly all vitamins 
C) most amino acids 
D) ATP and DNA 
A) carbohydrates 
B) nearly all vitamins 
C) most amino acids 
D) ATP and DNA

Exam 36: Ecosystems

_______ is characterized by unusually cold ocean temperatures in the eastern Pacific.

Choose the best definition of the term "ecology."

The total amount of energy fixed by photosynthetic organisms minus the energy used in their own metabolic activities is:

All of the following are correct about oligotrophic lakes except:

When you eat a hamburger,you are eating at which trophic level?

Where is an estuary found?

Loss of water from the leaves of plants occurs mostly via a process known as:

Microscopic organisms floating on the surface of the ocean make up the ___________________.

When the energy flow through an ecosystem is measured at each trophic level,__________ of the available energy passes from one level to the next.

Biological magnification can lead to high levels of mercury and lead in organisms higher in the food chain.

The moisture that travels up from the plants into the atmosphere falls back to the Earth as rain.

Describe the environmental water cycle.

Devise an example of a food chain with four links.

The community plus its habitat make up an ____________________.

Plants are the ____________ in the food chain in an ecosystem.

Several food chains woven together comprise a ______________.

All of the following are examples of detritivores except:

Characterized by permafrost and low,shrubby plants,_______ can be found nearest the poles.

The tropics are warmer than the temperate regions because:

Phosphorus is an essential element in all living things and is a component of:

The Science of Biology

The Chemistry of Life

Molecules of Life

Cells

Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Mitosis

Meiosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

Genomics and Biotechnology

Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

Evolution of the Animal Phyla

History of the Vertebrates

How Humans Evolved

The Animal Body and How It Moves

Circulation

Respiration

The Path of Food Through the Animal Body

Maintaining the Internal Environment

How the Animal Body Defends Itself

The Nervous System

The Senses

Chemical Signaling Within the Animal Body

Reproduction and Development

Evolution of Plants

Plant Form and Function

Plant Reproduction and Growth

Populations and Communities

Behavior and the Environment

Human Influences on the Living World

Filters