Alters Quiz #3
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Part 1 of 4 - 20.0/ 25.0 Points
Question 1 of 20 5.0/ 5.0 Points
Which of the following IS NOT considered a population?
A. all of the plants growing in a specific field
B. all of the humans in the world
C. all of the cliff swallows on a particular mountain
D. all of the protozoans in the gut of one termite
Answer Key: A
Feedback: Excellent!
Question 2 of 20 5.0/ 5.0 Points
The major density dependent limiting factor in populations is:
A. predation.
B. parasitism.
C. intraspecies competition.
D. weather conditions.
Answer Key: C
Feedback: Good job!
Question 3 of 20 5.0/ 5.0 Points
The population growth rate of the United States is determined by:
A. the number of people living in the US at this moment.
B. the number of people immigrating to and emigrating from the US.
C. the number of people being born and dying in the US.
D. the number of people immigrating/emigrating and being born/dying in the US.
Answer Key: D
Feedback: Great job!
Question 4 of 20 5.0/ 5.0 Points
Which of the following is a density independent environmental condition?
A. parasitism
B. a tornado
C. predation
D. competition for a food source
Answer Key: B
Feedback: Great job!
Question 5 of 20 0.0/ 5.0 Points
Exponential growth can only occur when:
A. growth conditions are ideal.
B. a population experiences extreme competition for resources.
C. the birth rate is less than or equal to the death rate.
D. the rate of increase of the population is negative.
Answer Key: A
Feedback: Please review Chapter 38.
Part 2 of 4 - 20.0/ 25.0 Points
Question 6 of 20 5.0/ 5.0 Points
Which of the following organisms is a primary consumer?
A. a flowering plant
B. a cow
C. an oak tree
D. a lion
Answer Key: B
Feedback: Good job!
Question 7 of 20 5.0/ 5.0 Points
Which of the following builds up organic molecules from carbon dioxide, water and soil nutrients?
A. decomposers
B. secondary consumers
C. producers
D. primary consumers
Answer Key: C
Feedback: Very good!
Question 8 of 20 5.0/ 5.0 Points
Most of the energy that enters the ecosystem:
A. is lost as heat.
B. ends up in the consumers.
C. ends up in the decomposers.
D. ends up in the producers.
Answer Key: A
Feedback: Very good!
Question 9 of 20 0.0/ 5.0 Points
Energy flows through an ecosystem:
A. from the producers to the decomposers to the consumers.
B. from the consumers to the producers to the decomposers.
C. from the producers to the consumers to the decomposers.
D. from the decomposers to the producers to the consumers.
Answer Key: C
Feedback: Please review Chapter 40.
Question 10 of 20 5.0/ 5.0 Points
An ecosystem involves:
A. all of the populations of animals living in one area.
B. all of the communities plus the abiotic elements in a given area.
C. all of the life upon the face of the earth.
D. all of the individuals of a single species living in one area.
Answer Key: B
Feedback: Very good!
Part 3 of 4 - 15.0/ 25.0 Points
Question 11 of 20 5.0/ 5.0 Points
Which of the following phrases IS NOT part of the definition of a biome?
A. within specific climatic regions
B. large ecosystems
C. all of the living organisms on the earth
D. easily recognized by their overall appearance
Answer Key: C
Feedback: Good job!
Question 12 of 20 0.0/ 5.0 Points
Which of the following statements IS NOT true about tropical rainforests?
A. The rainforest floor is thick and lush with vegetation.
B. Rainforests occur in regions of high temperature and rainfall.
C. The soil of the rainforest is very poor.
D. The top layer of the forest is called the canopy.
Answer Key: A
Feedback: Please review Chapter 41.
Question 13 of 20 0.0/ 5.0 Points
The temperate deciduous forest is found on areas of the earth that are at:
A. 50-70 degrees latitude with extremely high precipitation.
B. 30-50 degrees latitude with relatively low rainfall.
C. 30-50 degrees latitude with moderate rainfall.
D. 0-30 degrees latitude with extremely high precipitation.
Answer Key: C
Feedback: Please review Chapter 41.
Question 14 of 20 5.0/ 5.0 Points
The temperature of a tropical rain forest averages around:
A. 10 degrees C.
B. 50 degrees C.
C. 0 degrees C.
D. 25 degrees C.
Answer Key: D
Feedback: Excellent!
Question 15 of 20 5.0/ 5.0 Points
When the sun’s rays strike the northern hemisphere more directly, it experiences:
A. summer.
B. winter.
C. the rainy season.
D. the dry season.
Answer Key: A
Feedback: Very good!
Part 4 of 4 - 10.0/ 25.0 Points
Question 16 of 20 0.0/ 5.0 Points
The amount of biological magnification that can occur with a toxic pollutant such as DDT is as much as:
A. one hundred fold.
B. two fold.
C. six thousand fold.
D. eight million fold.
Answer Key: D
Feedback: Please review Chapter 42.
Question 17 of 20 0.0/ 5.0 Points
Producing cans from recycled aluminum saves how much energy compared to producing them from bauxite?
A. 95%
B. 1%
C. 10%
D. 50%
Answer Key: A
Feedback: Please review Chapter 42.
Question 18 of 20 5.0/ 5.0 Points
The introduction of certain inorganics such as nitrogen and phosphorus into a lake:
A. causes the death of all the plant species in the lake and causes the water to become clearer and better for recreational uses.
B. stimulate the growth of plants in the lake and causes the water to become clearer and better for recreational uses.
C. causes the death of all the plant species in the lake and eventually transforms the lake into a marsh.
D. stimulates the growth of plants in the lake and eventually transforms the lake into a marsh.
Answer Key: D
Feedback: Great job!
Question 19 of 20 5.0/ 5.0 Points
Which of the following countries IS NOT a world leader in the use of wind power to generate electricity?
A. Mexico
B. China
C. United States
D. Denmark
Answer Key: A
Feedback: Very good!
Question 20 of 20 0.0/ 5.0 Points
Which of the following statements IS NOT true concerning toxic substances that pollute surface waters?
A. Toxic substances come from a variety of industrial and natural sources.
B. The effects on humans from drinking polluted water range from numbness and deafness to cancer.
C. Some organisms accumulate these toxic pollutants in their fatty tissues.
D. Most toxic pollutants degrade or bread down relatively quickly.
Answer Key: D
Feedback: Please review Chapter 42.
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