NR 306 Final Exam Study Guide Questions
With Complete Solutions
abiotic factors Correct Answer Abiotic factors are the non-
living parts of an organism's habitat
-weather
Albedo Correct Answer Ability of a surface to reflect light
Amensalism Correct Answer a relationship between organisms
of two different species in which one is unaffected and the other
is negatively impacted by the association
( -,0 )
Biodiversity Index Correct Answer calculates species richness
and evenness and provides overall community diversity value
biotic factors Correct Answer All the living organisms that
inhabit an environment
-microorganisms
Bottom Up Control Correct Answer Abiotic
-minerals and water control community
-nutrients and water control plant species and abundance
(limiting factors)
-plants control herbivores (which in turn control predators!)
Carry capacity Correct Answer This is the population level that
can be supported, given the quantity of food, habitat, water and
, other life infrastructure present without degradation of the
habitat
Causes of loss of biodiversity Correct Answer Habitat
Destruction
Invasive Species
Pollution
Population
Overexploitation
Disruption of interaction networks
climate Correct Answer long-term average weather conditions
for an area
Commensalism Correct Answer A relationship between two
organisms in which one organism benefits and the other is
unaffected
( +,0 )
Community structure depends on: Correct Answer Dispersal
Environmental Conditions
Biotic Interactions
Competition Correct Answer the struggle between organisms
to survive in a habitat with limited resources
Two outcomes:
species coexist - niche differentiation
interspecies competition - competition exclusion leads to
evolutionary change
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