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Question 1 of 20 5.0/ 5.0 Points
What type of lake has nutrient-poor water, a small amount of organic matter, and low productivity?
Correct
A. An oligotrophic lake
B. A eutrophic lake
C. An epipelagic lake
D. A mesopelagic lake
E. A bathypelagic lake
Answer Key: A
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Question 2 of 20 5.0/ 5.0 Points
The taiga is a:
A. Desert
B. Tropical rainforest
Correct
C. Coniferous forest
D. Grassland
E. Temperate rain forest
Answer Key: C
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Question 3 of 20 5.0/ 5.0 Points
What type of forest is found in a broad belt in Northern Eurasia and North America, with cone-bearing trees?
A. Tundra
B. Desert
C. Tropical rain forest
D. Temperate deciduous forest
Correct
E. Taiga
Answer Key: E
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Question 4 of 20 5.0/ 5.0 Points
Which organisms provide most of the nutrient supply on the ocean and are at the bottom of the ocean food web?
A. Small fishes
B. Large fishes
Correct
C. Phytoplankton
D. Zooplankton
E. Seaweeds
Answer Key: C
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Question 5 of 20 5.0/ 5.0 Points
Which ecosystem with fertile soil has been mainly converted into agricultural farmlands for human use?
A. Desert
Correct
B. Temperate grasslands
C. Tropical rain forest
D. Tundra
E. Taiga
Answer Key: B
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Question 6 of 20 5.0/ 5.0 Points
Topography has a very little effect on the determination of where ecosystems are found.
Correct
True
False
Answer Key: False
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Question 7 of 20 0.0/ 5.0 Points
Which terrestrial ecosystem contains oak, beech, sycamore and maple trees?
A. Taiga
B. Desert
Incorrect
C. Tropical rain forest
D. Tundra
E. Temperate deciduous forest
Answer Key: E
Feedback: Deciduous trees (such as oak, beech, sycamore, and maple), lose their broad leaves in the fall and grow them in the spring. Many animals live in these temperate deciduous forests -- such as squirrels, cottontail rabbits, shrews, skunks, woodchucks, chipmunks, turkeys, pheasants, grouse, red foxes, deer and black bears.
Question 8 of 20 5.0/ 5.0 Points
Of all the aquatic communities, _________ act as the best nutrient trap.
A. Sandy beaches
B. Oceans
C. Rivers
D. Lakes
Correct
E. Estuaries
Answer Key: E
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Question 9 of 20 5.0/ 5.0 Points
Which region of the open ocean stays brightly lit by the sun?
A. The mesopelagic zone
Correct
B. The epipelagic zone
C. The abyssal zone
D. The bathypelagic zone
E. The benthic zone
Answer Key: B
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Question 10 of 20 0.0/ 5.0 Points
What is the action of the Gulf Stream?
A. Makes local climates uniform so that Great Britain has the same climate as Greenland
B. Is a source of "El Nino" and is a major fishing grounds
C. Flows westward across the Atlantic warming the western coast of Africa
Incorrect
D. Is the major Atlantic current that warms the Eastern coast of South America
E. Brings tropical Caribbean water to the East coast of North America and upper Western Europe
Answer Key: E
Feedback: The Gulf Stream, brings tropical Caribbean water to the east coast of North America and the higher latitudes of western Europe.
Part 2 of 2 - 45.0/ 50.0 Points
Question 11 of 20 5.0/ 5.0 Points
Which of the following statements is false about overexploitation?
A. Marine ecosystems can be destroyed by over fishing
B. Many overexploited species are decorative plants and exotic pets
Correct
C. The larger the population the more valuable its members are
D. It accounts for 17% of extinction today
E. Collecting and selling endangered species can be very lucrative
Answer Key: C
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Question 12 of 20 5.0/ 5.0 Points
Species that influence the viability of a community, although their numbers may not be exceedingly high, are referred to as:
A. Nonnative species
B. Pioneer species
C. Introduced species
Correct
D. Keystone species
E. Alien species
Answer Key: D
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Question 13 of 20 0.0/ 5.0 Points
Costal degradation is mostly due to:
A. The increase of pollution from inland factories
B. The introduction of alien species
Incorrect
C. The overexploitation of fishing grounds
D. The introduction of new diseases to coastal areas
E. Large concentrations of people living on or near the coast
Answer Key: E
Feedback: Understand how crowding of humans along coastlines degrades the coastlines
Question 14 of 20 5.0/ 5.0 Points
The biodiversity of organisms is evenly distributed throughout the biosphere.
Correct
True
False
Answer Key: False
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Question 15 of 20 5.0/ 5.0 Points
Most nonnative species have been introduced intentionally into a new environment and then spread out from its initial point of introduction.
Correct
True
False
Answer Key: True
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Question 16 of 20 5.0/ 5.0 Points
A species which is in peril of immediate extinction throughout all or most of its range is referred to as:
A. An introduced species
B. A keystone species
Correct
C. An endangered species
D. An extinct species
E. A threatened species
Answer Key: C
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Question 17 of 20 5.0/ 5.0 Points
Regions of the world that contain large concentrations of species are referred to as:
A. Biodiversity landscapes
Correct
B. Biodiversity hotspots
C. Biodiversity communities
D. Biodiversity populations
E. Biodiversity ecosystems
Answer Key: B
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Question 18 of 20 5.0/ 5.0 Points
Which of the following statements is false about the impact of biodiversity on biogeochemical cycles?
A. Biodiversity contributes to the water cycle
B. Biodiversity removes carbon dioxide from the atmosphere
C. Biodiversity uptakes excess nitrogen from the soil
Correct
D. Biodiversity has little effect on the breakdown of pollution
E. Biodiversity recycles phosphorus
Answer Key: D
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Question 19 of 20 5.0/ 5.0 Points
To achieve a sustainable ______, resources such as clean air, water, and an adequate amount of food, and living space for humans and wildlife have to be preserved.
Correct
A. society
B. business
C. environment
D. budget
E. all of the above
Answer Key: A
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Question 20 of 20 5.0/ 5.0 Points
A biologist is studying the introduction of a new species to an area which formerly never had that particular species. Based on this information you would conclude that he or she is studying:
A. A native species
B. A keystone species
C. An endangered species
Correct
D. An alien species
E. A pioneer species
Answer Key: D
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