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ECOL 111 Section B Questions and Correct
Answers
what is a r reproductive strategy and its purpose Ans: "r" selected
species produce a large number of offspring in order to disperse
widely in unpredictable environments
what is a k reproductive strategy Ans: "K" selected species invest
all of there resources in a small number of offspring that are more
likely to survive in predictable environments
What is allelopatric species Ans: when a species is separated and
isolated from one another into two different groups
Benefits of tag recapture Ans: Whole population estimate is
possible
Can be used on open or closed populations
Difference between natural and artificial tagging Ans: Natural
tagging is recognising animals by their patterns
Artificial tags are physically attached to animal
Examples of remote sensing and tracking Ans: Planes, satellite and
drones
what are the primary drivers of population change Ans: Vital rates:
birth, death and movement
Malthusian growth model v Exponential model Ans: Malthusian -
based on mechanism for change
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Exponential - describe population growth in an unlimited
environment
emigration and immigration Ans: movement of individuals among
subpopulations
what determines a simple v complex life story Ans: simple -
migration
complex - dispersal stages
different types of age structures and how to draw them Ans: rapid,
slow and zero growth
Three contrasting fertility curves Ans: Fish - increase, large fish
produce more eggs
Songbirds - reach age and maturity then level off
Humans - not typical fecundity curve, go through menopause
What is the grandmother hypothesis and how does it explain
menopause Ans: Menopause selected for in groups where presence
of older female enhances survival of grandchildren
Methods in estimating growth Ans: Counting annuli on scales
Tag-recapture studies
What is demographic stochasticity Ans: Random fluctuations in
population size as birth and death of each individuals is a
probabilistic event
© 2025 All rights reserved
ECOL 111 Section B Questions and Correct
Answers
what is a r reproductive strategy and its purpose Ans: "r" selected
species produce a large number of offspring in order to disperse
widely in unpredictable environments
what is a k reproductive strategy Ans: "K" selected species invest
all of there resources in a small number of offspring that are more
likely to survive in predictable environments
What is allelopatric species Ans: when a species is separated and
isolated from one another into two different groups
Benefits of tag recapture Ans: Whole population estimate is
possible
Can be used on open or closed populations
Difference between natural and artificial tagging Ans: Natural
tagging is recognising animals by their patterns
Artificial tags are physically attached to animal
Examples of remote sensing and tracking Ans: Planes, satellite and
drones
what are the primary drivers of population change Ans: Vital rates:
birth, death and movement
Malthusian growth model v Exponential model Ans: Malthusian -
based on mechanism for change
© 2025 All rights reserved
, 2 | Page
Exponential - describe population growth in an unlimited
environment
emigration and immigration Ans: movement of individuals among
subpopulations
what determines a simple v complex life story Ans: simple -
migration
complex - dispersal stages
different types of age structures and how to draw them Ans: rapid,
slow and zero growth
Three contrasting fertility curves Ans: Fish - increase, large fish
produce more eggs
Songbirds - reach age and maturity then level off
Humans - not typical fecundity curve, go through menopause
What is the grandmother hypothesis and how does it explain
menopause Ans: Menopause selected for in groups where presence
of older female enhances survival of grandchildren
Methods in estimating growth Ans: Counting annuli on scales
Tag-recapture studies
What is demographic stochasticity Ans: Random fluctuations in
population size as birth and death of each individuals is a
probabilistic event
© 2025 All rights reserved
