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Exam 4 pt.2

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LEC. 20-22
Eboni Barnes
Quiz by Eboni Barnes, updated more than 1 year ago
Eboni Barnes
Created by Eboni Barnes almost 7 years ago
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Question 1

Question
Nitrogen is taken from the atmosphere and converted into a form usable by plants through a process called
Answer
  • nitrification
  • nitrogen fixation
  • assimilation
  • ammonification
  • denitrification

Question 2

Question
Which of the following is NOT recycled in an ecosystem forever?
Answer
  • carbon
  • water
  • energy
  • nitrogen
  • phosphorus

Question 3

Question
An organism's niche includes
Answer
  • what it eats
  • what kind of environment it lives in
  • how wet or dry it is
  • the temperature
  • all of these

Question 4

Question
The complex of interconnected food chains in an ecosystem is known as
Answer
  • trophic levels
  • a food web
  • a biogeochemical cycle
  • succession
  • energy flow

Question 5

Question
An example of commensalism is
Answer
  • mistletoe living on a host plant
  • an epiphyte growing on a tree
  • mycorrhize
  • ants and flowering vines in Central America
  • a bacterium living on a dead leaf

Question 6

Question
A Type III survivorship curve would be observed
Answer
  • in humans
  • in annual plant populations crowded into a limited space
  • when mortality is concentrated later in life
  • in many tree species because many young seedlings die
  • when the probability of death is equally likely at any age

Question 7

Question
A goat pulling a plant out of the ground to eat is an example of
Answer
  • parasitism
  • predation
  • competition
  • commensalism
  • mutualism

Question 8

Question
Which of the following organisms would be found at the base of a pyramid of energy?
Answer
  • an herbivore
  • a primary consumer
  • a secondary consumer
  • an omnivore
  • a producer

Question 9

Question
Which contains the largest number of organisms?
Answer
  • community
  • ecosystem
  • population
  • biosphere
  • landscape

Question 10

Question
When you observe the growth rate of a population decreasing to zero, you can conclude that
Answer
  • all individuals in the population have died
  • the species has become extinct
  • the growth curve of the population has a J-shape
  • conditions are optimal
  • the carrying capacity of the environment has been reached

Question 11

Question
Herbivores are
Answer
  • primary consumers
  • secondary consumers
  • detritivores
  • omnivores
  • producers

Question 12

Question
A plant defense mechanism to escape predation includes
Answer
  • thorns
  • spines
  • a thick waxy cuticle
  • bad tasting chemicals
  • all of these

Question 13

Question
Two important decomposers are
Answer
  • bacteria and fungi
  • vultures and snails
  • snails and clams
  • bears and pigs
  • oaks and maples

Question 14

Question
Intraspecific competition
Answer
  • tends to limit the population size
  • usually results in one species being eliminated from an area
  • is not a significant factor in communities
  • includes predation and parasitism
  • is the same as predation

Question 15

Question
Which biome is characterized by thickets of evergreen shrubs and small trees?
Answer
  • chaparral
  • tropical rain forest
  • temperate grassland
  • temperate deciduous forest
  • temperate rain forest

Question 16

Question
What is most important for determining a biome's boundaries?
Answer
  • plants
  • animals
  • precipitation
  • temperature
  • precipitation and temperature

Question 17

Question
Hot summers and pronounced winters, moderate to high rainfall, and a dense canopy of broad-leaved trees over saplings and shrubs characterize the ____ biome.
Answer
  • savanna
  • tropical rain forest
  • temperate grassland
  • temperate deciduous forest
  • temperate rain forest

Question 18

Question
Which biome is characterized by rich topsoil and broadleaf trees that lose their leaves in winter?
Answer
  • boreal forest
  • temperate rain forest
  • temperate deciduous forest
  • tropical rain forest
  • savanna

Question 19

Question
Which biome is characterized by permafrost?
Answer
  • taiga
  • tundra
  • temperate deciduous forest
  • desert
  • grassland

Question 20

Question
High precipitation, cool summers, mild winters, and an evergreen forest characterize the biome.
Answer
  • temperate deciduous forest
  • temperate rain forest
  • tropical rain forest
  • taiga
  • chaparral

Question 21

Question
Mediterranean biome is affected by _________ air currents in summer.
Answer
  • ascending wet
  • clockwise turning
  • descending wet
  • ascending dry
  • descending dry

Question 22

Question
Which biome am I? I am found along the northwest coast of North America and have coniferous evergreen trees.
Answer
  • boreal forest
  • chaparral
  • temperate rain forest
  • tropical rain forest
  • grassland

Question 23

Question
The biome that can have enormous fluctuations of daily and seasonal temperatures is the
Answer
  • temperate deciduous forest
  • savannah
  • tundra
  • desert
  • none of these

Question 24

Question
Which biome is characterized by conifers and extremely cold winters?
Answer
  • boreal forest
  • tundra
  • temperate deciduous forest
  • desert
  • grassland

Question 25

Question
Hot summers and cool to cold winters, low to moderate precipitation, and the best agricultural soils in the world characterize the ____ biome.
Answer
  • savanna
  • chaparral
  • temperate grassland
  • temperate deciduous forest
  • desert

Question 26

Question
Which of following statements is correct?
Answer
  • Swamps are fulfilled with grass.
  • There are a lot of conifers in marshes.
  • Benthic zone is dominated by zooplanktons in ocean.
  • Estuaries and delta regions have very high primary productivity.
  • Rivers are stablized ecosystems.

Question 27

Question
Which biome am I? The weather is cool, and there is high precipitation and dense fog.
Answer
  • deciduous forest
  • chaparral
  • temperate rain forest
  • tropical rain forest
  • savanna

Question 28

Question
These two biomes are dominated by conifers:
Answer
  • tundra and taiga
  • boreal forest and temperate rain forest
  • temperate rain forest and tropical rain forest
  • chaparral and savanna
  • temperate deciduous forest and temperate rain forest

Question 29

Question
Today, the extinction of most species is due to
Answer
  • the destruction of habitats
  • pollution
  • the introduction of foreign species
  • commercial harvesting
  • controlling native pests

Question 30

Question
A threatened species is different from an endangered species in that a threatened species
Answer
  • is composed of individuals that cannot interbreed
  • is in imminent danger of extinction
  • is likely to become endangered in the near future
  • lives outside its range
  • has already become extinct

Question 31

Question
By definition, an area providing ecosystem services
Answer
  • is a hotspot
  • is important to the functioning of the ecosystem as a whole
  • is an example of in situ conservation
  • is an example of ex situ conservation
  • is undergoing restoration ecology

Question 32

Question
Global warming occurs because greenhouse gases
Answer
  • reflect visible radiation
  • absorb visible radiation
  • absorb infrared radiation
  • absorb carbon dioxide
  • reflect carbon dioxide

Question 33

Question
Which of the following statements concerning invasive species is FALSE?
Answer
  • they may compete with native species for resources
  • they may prey on native species
  • they may cause economic harm
  • they usually cause less harm to the native species than natural predators
  • they may spread to new areas on their own

Question 34

Question
The most effective way to preserve species is to
Answer
  • divide areas into fragments having separate species
  • divide areas into fragments that are far apart rather than close together
  • preserve habitats that have only a few species rather than many species
  • build roads in order to more easily access species
  • establish parks and reserves

Question 35

Question
Species richness is defined as
Answer
  • the number of species
  • the genetic variety within a population
  • the genetic variety within a species
  • the diversity among ecosystems
  • biodiversity

Question 36

Question
Increases in the amount of ____ in the atmosphere may be a threat to the world because of the greenhouse effect.
Answer
  • carbonate
  • carbon dioxide
  • helium
  • nitrogen gas
  • none of these

Question 37

Question
Which of the following is NOT classified as a greenhouse gas?
Answer
  • molecular nitrogen (N2)
  • surface ozone (O3)
  • carbon dioxide (CO2)
  • nitrous oxide (N2O)
  • methane (CH4)

Question 38

Question
Which of the following is NOT a probable consequence of global warming?
Answer
  • some species will disperse into new environments
  • Canada and Russia will decrease their agricultural productivity
  • some areas will have increased precipitation
  • some areas will have increased droughts
  • sea levels will rise

Question 39

Question
Which of the following is NOT a characteristic of endangered species?
Answer
  • they have an extremely localized range
  • they have low reproductive rates
  • they have specialized feeding habits
  • they live on islands
  • they are not endemic

Question 40

Question
Ex situ conservation
Answer
  • is the best way to preserve biodiversity
  • is exemplified by a national park
  • is exemplified by a national reserve
  • is exemplified by a marine sanctuary
  • is exemplified by a botanic guarden
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