ECOL 111 SECTION B EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS
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
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 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
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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS 100% PASS
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
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 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
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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
