Question 1

When organisms die, their nitrogenous organic compounds are converted to simpler inorganic compounds such as ammonia through the process of

Accepted Answer

A) nitrification 
B) ammonification 
C) denitrification 
D) assimilation 
E) leaching

Question 2

A grassy meadow high in the Sierra Nevada Mountains is known to support a variety of organisms.
a.During the summers when grass is thick and lush, and wildflowers abound, butterflies take advantage of the abundant nectar source.
a.Bears graze on the berries in shrubs at the edge of the meadow.
a.Deer also forage at the edge of the meadow.
a.In the early mornings, coyote are known to prey on the squirrel and mouse population that burrow into the meadow soil.
a.A variety of birds prey on the butterflies and other insects such as bees and wasps.
-The coyotes would be classified as

Accepted Answer

A) producers 
B) primary consumers 
C) secondary consumers 
D) decomposers 
E) tertiary consumers

Question 3

Match the items listed below with the appropriate choice
 
-On the figure of the hydrological cycle, choose the letter that represents evaporation.

Accepted Answer

The answer of Match the items listed below with the...

Question 4

The form of nitrogen most usable to plants is

Accepted Answer

A) ammonia 
B) nitrogen gas 
C) proteins 
D) nitrates 
E) methane

Question 5

Of the total energy that falls on their leaves, what percent do producers on average convert to chemical energy through the process of photosynthesis?

Accepted Answer

A) 0% 
B) 1% 
C) 10% 
D) 25% 
E) 50%

Question 6

Match the descriptive phrase below with its appropriate cycle.
-Fixation into soil accomplished by bacteria and algae

Accepted Answer

A) hydrologic 
B) carbon 
C) nitrogen 
D) phosphorus 
E) sulfur

Question 7

Which of the following ecosystems has the highest net primary productivity?

Accepted Answer

A) agricultural land 
B) open ocean 
C) temperate forest 
D) swamps and marshes 
E) lakes and streams

Question 8

Which animal consumes energy from the highest number of links in the food web? Name a possible problem that this animal could be subjected to that others in the food web do not risk.

Accepted Answer

The answer of Which animal consumes energy from the highest...

Question 9

Which statement(s) describes field research most accurately?

Accepted Answer

A) It has been used to develop most of our knowledge about ecosystems. 
B) Controlled experiments can be done. 
C) Geographic information systems can be employed to store and analyze data. 
D) Remote sensing devices are sometimes used. 
E) All of these answers.

Question 10

Bacteria are more important in the ____________________ than in the carbon or phosphorous cycle.

Accepted Answer

The answer of Bacteria are more important in the ____________________...

Question 11

Ecology is the study of connections in the natural world.

Accepted Answer

A) True 
 B)False

Question 12

A(n) ____________________ consists of members of the same species living in the same area.

Accepted Answer

The answer of A(n) ____________________ consists of members of the...

Question 13

The study described above is best categorized as

Accepted Answer

A) field research 
B) laboratory research 
C) computer modeling 
D) a combination of all three types of research 
E) a combination of laboratory and field research, but no computer modeling

Question 14

All of the following are abiotic factors except

Accepted Answer

A) light 
B) bacteria 
C) pH 
D) size of soil particles 
E) water

Question 15

Match the items listed below with the appropriate choice
 
-On the generalized structure of the Earth figure, choose the letter of the layer that consists of the Earth's crust and upper mantle.

Accepted Answer

The answer of Match the items listed below with the...

Question 16

Match the descriptive phrase below with its appropriate cycle.
-Affected by burning coal

Accepted Answer

A) hydrologic 
B) carbon 
C) nitrogen 
D) phosphorus 
E) sulfur

Question 17

Denitrification is an important natural process carried out by bacteria.

Accepted Answer

A) True 
 B)False

Question 18

Nitrogen makes up approximately ____% of the volume of the atmosphere.

Accepted Answer

A) 25 
B) 42 
C) 57 
D) 78 
E) 85

Question 19

Increasing levels of carbon dioxide are one of the major contributors to global warming.

Accepted Answer

A) True 
 B)False

Question 20

Another word for consumer is ____________________.

Accepted Answer

The answer of Another word for consumer is ____________________....

Exam 3: Ecosystems: What Are They and How Do They Work

When organisms die, their nitrogenous organic compounds are converted to simpler inorganic compounds such as ammonia through the process of

Match the items listed below with the appropriate choice -On the figure of the hydrological cycle, choose the letter that represents evaporation.

The form of nitrogen most usable to plants is

Of the total energy that falls on their leaves, what percent do producers on average convert to chemical energy through the process of photosynthesis?

Match the descriptive phrase below with its appropriate cycle. -Fixation into soil accomplished by bacteria and algae

Which of the following ecosystems has the highest net primary productivity?

Which animal consumes energy from the highest number of links in the food web? Name a possible problem that this animal could be subjected to that others in the food web do not risk.

Which statement(s) describes field research most accurately?

Bacteria are more important in the ____________________ than in the carbon or phosphorous cycle.

Ecology is the study of connections in the natural world.

A(n) ____________________ consists of members of the same species living in the same area.

The study described above is best categorized as

All of the following are abiotic factors except

Match the items listed below with the appropriate choice -On the generalized structure of the Earth figure, choose the letter of the layer that consists of the Earth's crust and upper mantle.

Match the descriptive phrase below with its appropriate cycle. -Affected by burning coal

Denitrification is an important natural process carried out by bacteria.

Nitrogen makes up approximately ____% of the volume of the atmosphere.

Increasing levels of carbon dioxide are one of the major contributors to global warming.

Another word for consumer is ____________________.