Question 1

Which of the following distinguishes tundra from other biomes ?

Accepted Answer

A) An extended day length during its growing season. 
B) Nutrient-rich soils. 
C) Continuous heavy precipitation. 
D) Very long winters and long summers. 
A) An extended day length during its growing season. 
B) Nutrient-rich soils. 
C) Continuous heavy precipitation. 
D) Very long winters and long summers.

Question 2

Why is tall grass prairie North America's rarest biome ?

Accepted Answer

A) Historically it only occurred in a very tiny region of North America. 
B) Because over 90% of this biome has been converted to agriculture 
C) Global warming has resulted in the conversion of most tall grass prairie to short grass prairie. 
D) Pollution has degraded most of our tall grass prairie region. 
A) Historically it only occurred in a very tiny region of North America. 
B) Because over 90% of this biome has been converted to agriculture 
C) Global warming has resulted in the conversion of most tall grass prairie to short grass prairie. 
D) Pollution has degraded most of our tall grass prairie region.

Question 3

All of the following apply to estuaries EXCEPT:

Accepted Answer

A) There provide very valuable breeding grounds for commercially important fish and shellfish. 
B) There is no salinity in estuarine ecosystems due to large supply of fresh water from a river. 
C) Plants and algae that grow here have high tolerance for changing environmental conditions like salinity and light penetration. 
D) These coastal ecosystems provide a barrier against the ocean during storms. 
A) There provide very valuable breeding grounds for commercially important fish and shellfish. 
B) There is no salinity in estuarine ecosystems due to large supply of fresh water from a river. 
C) Plants and algae that grow here have high tolerance for changing environmental conditions like salinity and light penetration. 
D) These coastal ecosystems provide a barrier against the ocean during storms.

Question 4

Evidence for natural selection includes:

Accepted Answer

A) Observations from the fossil record. 
B) Evidence from comparative anatomy. 
C) Evidence from molecular biology. 
D) All of these choices. 
A) Observations from the fossil record. 
B) Evidence from comparative anatomy. 
C) Evidence from molecular biology. 
D) All of these choices.

Question 5

Which the following statements typifies tropical rain forests ?

Accepted Answer

A) They are usually composed of at least ten distinct layers,or stories,of vegetation. 
B) They are found in areas with high accumulations of organic material in the soil. 
C) They occur in areas with ancient,mineral-poor soil. 
D) They are known for being only moderately productive. 
A) They are usually composed of at least ten distinct layers,or stories,of vegetation. 
B) They are found in areas with high accumulations of organic material in the soil. 
C) They occur in areas with ancient,mineral-poor soil. 
D) They are known for being only moderately productive.

Question 6

What type of trees would you expect to find in a boreal forest?

Accepted Answer

A) coniferous 
B) deciduous 
C) temperate 
D) hardwoods 
A) coniferous 
B) deciduous 
C) temperate 
D) hardwoods

Question 7

Which of the following biomes is characterized by moist winters and hot,dry summers ?

Accepted Answer

A) temperate grassland 
B) desert 
C) tundra 
D) chaparral 
A) temperate grassland 
B) desert 
C) tundra 
D) chaparral

Question 8

Modern synthesis refers to:

Accepted Answer

A) The major changes that have been recently made to Darwin's theory of natural selection. 
B) The modern rejection of Darwin's theory of natural selection based on new evidence. 
C) Evidence for the Darwin's theory of natural selection. 
D) The unified explanation of evolution based on a synthesis of Darwin's theory of natural selection with the principles of genetic. 
A) The major changes that have been recently made to Darwin's theory of natural selection. 
B) The modern rejection of Darwin's theory of natural selection based on new evidence. 
C) Evidence for the Darwin's theory of natural selection. 
D) The unified explanation of evolution based on a synthesis of Darwin's theory of natural selection with the principles of genetic.

Question 9

Which of the following statements about natural selection is TRUE ?

Accepted Answer

A) Only the strongest individuals survive to reproduce. 
B) Individuals evolve traits that allow them to survive and pass those on to their offspring. 
C) The most similar individuals are the most likely to adapt to new environments. 
D) Individuals most adapted to their environments are most likely to survive and reproduce. 
A) Only the strongest individuals survive to reproduce. 
B) Individuals evolve traits that allow them to survive and pass those on to their offspring. 
C) The most similar individuals are the most likely to adapt to new environments. 
D) Individuals most adapted to their environments are most likely to survive and reproduce.

Question 10

Draw a flow diagram of an old field undergoing succession.What type of succession is this and why
?

Accepted Answer

The change in an old field over the year

Question 11

Excluding soil organisms,what percentage of tropical rainforest inhabitants are adapted to live in the canopy ?

Accepted Answer

A) 90% 
B) 70% 
C) 50% 
D) 40% 
A) 90% 
B) 70% 
C) 50% 
D) 40%

Question 12

Which of the following does NOT apply to freshwater wetlands ?

Accepted Answer

A) Anaerobic conditions 
B) accumulation of organic material 
C) Water-tolerant vegetation 
D) Drought resistant plants 
A) Anaerobic conditions 
B) accumulation of organic material 
C) Water-tolerant vegetation 
D) Drought resistant plants

Question 13

Deciduous forests:

Accepted Answer

A) are adapted to extremely cold climates 
B) have trees that bear seeds in cones 
C) have trees that shed their leaves seasonally 
D) are not useful commercially 
A) are adapted to extremely cold climates 
B) have trees that bear seeds in cones 
C) have trees that shed their leaves seasonally 
D) are not useful commercially

Question 14

If each breeding pair of elephants produces 6 offspring during a 90-year life span,in 750 years,a single pair of elephants will have given rise to a population of 15 million elephants.Yet elephants have not overrun the planet.WHY ?

Accepted Answer

A) Elephants have a niche that expands with the population. 
B) Elephants produce more offspring than will survive to maturity. 
C) Most elephants are kept in captivity (circus & zoo)and not allowed to reproduce. 
D) Individual elephants in a population exhibit no variation,reducing their reproductive success. 
A) Elephants have a niche that expands with the population. 
B) Elephants produce more offspring than will survive to maturity. 
C) Most elephants are kept in captivity (circus & zoo)and not allowed to reproduce. 
D) Individual elephants in a population exhibit no variation,reducing their reproductive success.

Question 15

Which of the following characterizes both the savanna and the chaparral ?

Accepted Answer

A) Periodic fires 
B) Extensive stands of trees 
C) Large herds of herbivorous mammals 
D) Soils with high mineral content 
A) Periodic fires 
B) Extensive stands of trees 
C) Large herds of herbivorous mammals 
D) Soils with high mineral content

Question 16

The mechanism of natural selection involves all of the following EXCEPT:

Accepted Answer

A) overproduction within a species. 
B) limits on population growth. 
C) genetic variation. 
D) a stable community structure. 
A) overproduction within a species. 
B) limits on population growth. 
C) genetic variation. 
D) a stable community structure.

Question 17

Which of the following organisms are representative of the limnetic zone ?

Accepted Answer

A) Microscopic plankton 
B) Frogs and their tadpoles 
C) Cattails and other emergent vegetation 
D) Worms,insect larvae,and crayfish 
A) Microscopic plankton 
B) Frogs and their tadpoles 
C) Cattails and other emergent vegetation 
D) Worms,insect larvae,and crayfish

Question 18

Which of the following is a biological control that is used to suppress wild fires in chaparral ?

Accepted Answer

A) viral diseases 
B) goats 
C) introduced species 
D) insect herbivores 
A) viral diseases 
B) goats 
C) introduced species 
D) insect herbivores

Question 19

Which of the following is NOT important in determining the distribution of organisms in aquatic biomes ?

Accepted Answer

A) Light penetration 
B) Mineral nutrient concentrations 
C) Precipitation 
D) Salinity 
A) Light penetration 
B) Mineral nutrient concentrations 
C) Precipitation 
D) Salinity

Question 20

Which set of three parameters has the MOST effect on biome distributions?

Accepted Answer

A) latitude,longitude,precipitation 
B) precipitation,longitude,temperature 
C) temperature,latitude,climate 
D) latitude,precipitation,temperature 
A) latitude,longitude,precipitation 
B) precipitation,longitude,temperature 
C) temperature,latitude,climate 
D) latitude,precipitation,temperature

Which of the following distinguishes tundra from other biomes ?

Why is tall grass prairie North America's rarest biome ?

All of the following apply to estuaries EXCEPT:

Evidence for natural selection includes:

Which the following statements typifies tropical rain forests ?

What type of trees would you expect to find in a boreal forest?

Which of the following biomes is characterized by moist winters and hot,dry summers ?

Modern synthesis refers to:

Which of the following statements about natural selection is TRUE ?

Draw a flow diagram of an old field undergoing succession.What type of succession is this and why ?

Excluding soil organisms,what percentage of tropical rainforest inhabitants are adapted to live in the canopy ?

Which of the following does NOT apply to freshwater wetlands ?

Deciduous forests:

If each breeding pair of elephants produces 6 offspring during a 90-year life span,in 750 years,a single pair of elephants will have given rise to a population of 15 million elephants.Yet elephants have not overrun the planet.WHY ?

Which of the following characterizes both the savanna and the chaparral ?

The mechanism of natural selection involves all of the following EXCEPT:

Which of the following organisms are representative of the limnetic zone ?

Which of the following is a biological control that is used to suppress wild fires in chaparral ?

Which of the following is NOT important in determining the distribution of organisms in aquatic biomes ?

Which set of three parameters has the MOST effect on biome distributions?

The Environmental Challenges We Face

Sustainability and Human Values

Environmental History, Politics, and Economics

Risk Analysis and Environmental Health Hazards

How Ecosystems Work

Human Population Change and the Environment

Air and Air Pollution

Global Atmospheric Changes

Freshwater Resources and Water Pollution

The Ocean and Fisheries

Mineral and Soil Resources

Land Resources

Agriculture and Food Resources

Biodiversity and Conservation

Solid and Hazardous Waste

Nonrenewable Energy Resources

Renewable Energy Resources

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Exam 6: Ecosystems and Evolution

Which of the following distinguishes tundra from other biomes ?

Why is tall grass prairie North America's rarest biome ?

All of the following apply to estuaries EXCEPT:

Evidence for natural selection includes:

Which the following statements typifies tropical rain forests ?

What type of trees would you expect to find in a boreal forest?

Which of the following biomes is characterized by moist winters and hot,dry summers ?

Modern synthesis refers to:

Which of the following statements about natural selection is TRUE ?

Draw a flow diagram of an old field undergoing succession.What type of succession is this and why ?

Excluding soil organisms,what percentage of tropical rainforest inhabitants are adapted to live in the canopy ?

Which of the following does NOT apply to freshwater wetlands ?

Deciduous forests:

If each breeding pair of elephants produces 6 offspring during a 90-year life span,in 750 years,a single pair of elephants will have given rise to a population of 15 million elephants.Yet elephants have not overrun the planet.WHY ?

Which of the following characterizes both the savanna and the chaparral ?

The mechanism of natural selection involves all of the following EXCEPT:

Which of the following organisms are representative of the limnetic zone ?

Which of the following is a biological control that is used to suppress wild fires in chaparral ?

Which of the following is NOT important in determining the distribution of organisms in aquatic biomes ?

Which set of three parameters has the MOST effect on biome distributions?

The Environmental Challenges We Face

Sustainability and Human Values

Environmental History, Politics, and Economics

Risk Analysis and Environmental Health Hazards

How Ecosystems Work

Human Population Change and the Environment

Air and Air Pollution

Global Atmospheric Changes

Freshwater Resources and Water Pollution

The Ocean and Fisheries

Mineral and Soil Resources

Land Resources

Agriculture and Food Resources

Biodiversity and Conservation

Solid and Hazardous Waste

Nonrenewable Energy Resources

Renewable Energy Resources

Filters