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Ecology Ch 5
Test Description: Interactions, sucession, population
Instructions: Answer all questions to get your test result.
1) Which of the following is said to occur when an interaction benefits one species but has little, if any, effect on the other?
A
Parasitism
B
Predation
C
Commensialism
D
Mutualism
2) 4. Which of the following is said to occur when one organism feeds on the body of, or the energy used by, another organism?
A
Predation
B
Parasitism
C
Interspecific Competition
D
Mutualism
3) Parasites
A
must be internal
B
rarely kill their host
C
usually kill their host
D
usually larger then their host
4) When populations of two different species interact over long periods of time, changes in the gene pool of one species can lead to changes in the gene pool of the other. This is
A
Coevolution
B
Luck
C
Commensialism
D
Commensalism
5) All of the following are forms of nondestructive behavior between species except
A
orchids attached to branches of forest trees
B
bacteria breaking down food for a host and having a sheltered habitat
C
using the energy or body of another organisms as a food source
D
reducing competition by foraging at different times
6) “The maximum population of a given species that a particular habitat can sustain indefinitely without being degraded” is the definition of
A
lots
B
exponential growth
C
logistic growth
D
carrying capacity
7) When plotting the number of individuals in a population against time the data yield a J-shaped curve, which indicates which of the following?
A
biotic potential
B
carrying capacity
C
logistic growth
D
exponential growth
8) Which of the following would cause a population to overshoot its carrying capacity?
A
increase disease
B
increase preditors
C
decrease death rate
D
a reproductive time lag between birth and death rates
9) Which of the following would exhibit primary succession?
A
a clear-cut forest
B
a rock exposed by a retreating glacier
C
recently burned forest
D
an abandoned farm
10) Late successional plants are largely unaffected by plants at earlier stages of succession, a factor called
A
intolerance
B
stable
C
tolerance
D
declining
*select an answer for all questions
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