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

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

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