Biology 1 - The Life Sciences » 2019 » Module 7 Exam

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Question #1
A population is a
A.   group of individuals of a single species that live and interact in one area
B.   group of individuals of several interacting species that live in one area
C.   sum of all individuals of a species in all locations
D.   group of individuals of several interacting species that interact in multiple ecosystems
Question #2
Taylor wants to know how herbivores of different sizes affect the types of plants found in a certain area. What sort of ecologist is Taylor?
A.   community ecologist
B.   ecosystem ecologist
C.   population ecologist
D.   biosphere ecologist
Question #3
Which of the following would a clumped population dispersion pattern?
A.   oak trees planted on city streets
B.   a pod of 40 migrating whales
C.   earthworms in the soil of a garden
D.   a field of wildflowers
Question #4
Exponential growth is sometimes referred to as the 'J' curve.
A.   TRUE
B.   FALSE
Question #5
Which of the following models of population growth includes the concept of a carrying capacity?
A.   Logistic growth
B.   Geometric growth
C.   Arithmetic growth
D.   Exponential growth
Question #6
Which of the following is an example of a density-independent factor?
A.   cold weather causing seedlings in a field to freeze
B.   a disease on wheat plants in a wheat field
C.   a specialist searching for a particular type of plant that is its food source
D.   a plant parasite, such as mistletoe
Question #7
A Type I survivorship curve, with higher death rates at older ages, is typical of 
A.   weedy plants, like dandelions
B.   organisms such as flies and toads
C.   large mammals (including humans!)
D.   birds
Question #8
r-selected species tend to _________
A.   produce large young
B.   be large
C.   provide lots of parental care
D.   be opportunists
Question #9
K-selected species (aka equilibrium species) provide very much parental care for their young.
A.   TRUE
B.   FALSE
Question #10
A pyramidal age-structure diagram is the result of high juvenile mortality and high reproductive rates.
A.   FALSE
B.   TRUE
Question #11
The current world human population size is about _________
A.   7 billion
B.   2 billion
C.   12 billion
D.   100 billion
Question #12
When one competitor species eliminates another competitor from the habitat, it is called ___________
A.   a loss of a keystone species
B.   competitive exclusion
C.   niche partitioning
D.   extinction
Question #13
Niche partitioning (or resource partitioning) results in lower levels of competition over time.
A.   FALSE
B.   TRUE
Question #14
Those species that are central to the stability of a community are called ________
A.   dominant species
B.   r-selected species
C.   herbivores
D.   keystone species
Question #15
Species evenness is a measure of the total number of species occupying a habitat
A.   FALSE
B.   TRUE
Question #16
Camouflage is a strategy that can be used by ___________
A.   both predator and prey
B.   predator species
C.   prey species
D.   neither predator nor prey
Question #17
Which event would represent primary succession?
A.   Letting your yard grow wild
B.   An abandoned farmer's field
C.   Grasses growing on a new volcanic island
D.   Weeds growing through cracks in a sidewalk
Question #18
Which factors define the nature and distribution of earth's biomes?
A.   Plant abundance
B.   Both precipitation and temperature
C.   Temperature
D.   Species diversity
Question #19
Approximately what percentage of energy is available in each successive trophic level in a typical energy pyramid?
A.   100%
B.   0.10%
C.   10%
D.   1%
Question #20
In an ecological energy pyramid, an animal that eats an animal that eats an animal that eats plants would be called a ________.
A.   secondary consumer
B.   tertiary consumer
C.   quarternary consumer
D.   primary consumer
Question #21
Which of the following trophic levels has the lowest energy content and biomass?
A.   detritivores
B.   primary consumers
C.   top carnivores
D.   producers
Question #22
Which level of ecological organization includes both the living and nonliving components of a functional system?,,
A.   Population
B.   Organism
C.   Community
D.   Ecosystem

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