Bio230 Questions with Correct Answers |New
Version with complete solutions
Heritable variation: Individuals vary - ✔✔Genetics
Population tend to grow exponentially but limited by resources (struggle for existence) -
✔✔Ecology
Variation matters in the struggle - ✔✔Evolution
What is Ecology? - ✔✔Study of abundance, distribution, and interactions of organisms with
their environment (biotic and abiotic).
Abiotic (physical & chemical conditions): - ✔✔Temperature moisture, concentration of gases
(O2 and CO2), light intensity etc.
Biotic (interactions with other organisms) - ✔✔Mating, predator and prey, predation,
competition etc.
Dispersal - ✔✔movement of individuals away from centers from their area of origin, contributes
to global distribution
Factor 1 - ✔✔Dispersal and history
•New Zealand vs Hawaii
•Both places have one common mammal!
•The BAT!
,Factor 2 - ✔✔Factor 2. Behavior (e.g., Habitat Selection)
•Some organisms do not occupy all their potential range
•Distribution may be limited by habitat selection behavior
Factor 3 - ✔✔3. Biotic Factors
Interactions with other species
Competition and predation (...limit distribution)
Factor 4 - ✔✔Abiotic factors: Rocks and Soil
•At local level, physical structure, pH, mineral composition affect plants and animals...
4 big questions - ✔✔Diversity of Life
Distribution and abundance
Fit of form and function
4. Procession of life (common design)
Individual - ✔✔Birth and death are discrete events and happen only once
Population - ✔✔Birth and death, continuous, produce dynamics (birth/year, death/year etc.)
, Community - ✔✔Many populations of different species and how their interaction affect birth
and death rates
Ecosystem - ✔✔Several biotic communities plus abiotic factors
Landscape - ✔✔patchwork of ecosystems (How energy and nutrients exchanged between
ecosystems)
Global scale: - ✔✔Different types of ecosystems or biomes (biodiversity in different biomes)
Three kinds of dynamics - ✔✔The 1rst fact: Organisms are born and eventually die. This gives
rise to the first kind of dynamics
Population dynamics
2nd fact: Organisms need energy for growth, survival and reproduction.
Foraging dynamics
3rd fact: Organisms change over time
Evolutionary dynamics
Population - ✔✔A group of interbreeding individuals of a species in a defined area at a given
time
Exponential Growth - ✔✔Population size (N) changes over time (t) as a function births & deaths
(Δ means "change")
b (birth rate/individual)
d (death rate/individual)
b - d (symbolized as "r")
Version with complete solutions
Heritable variation: Individuals vary - ✔✔Genetics
Population tend to grow exponentially but limited by resources (struggle for existence) -
✔✔Ecology
Variation matters in the struggle - ✔✔Evolution
What is Ecology? - ✔✔Study of abundance, distribution, and interactions of organisms with
their environment (biotic and abiotic).
Abiotic (physical & chemical conditions): - ✔✔Temperature moisture, concentration of gases
(O2 and CO2), light intensity etc.
Biotic (interactions with other organisms) - ✔✔Mating, predator and prey, predation,
competition etc.
Dispersal - ✔✔movement of individuals away from centers from their area of origin, contributes
to global distribution
Factor 1 - ✔✔Dispersal and history
•New Zealand vs Hawaii
•Both places have one common mammal!
•The BAT!
,Factor 2 - ✔✔Factor 2. Behavior (e.g., Habitat Selection)
•Some organisms do not occupy all their potential range
•Distribution may be limited by habitat selection behavior
Factor 3 - ✔✔3. Biotic Factors
Interactions with other species
Competition and predation (...limit distribution)
Factor 4 - ✔✔Abiotic factors: Rocks and Soil
•At local level, physical structure, pH, mineral composition affect plants and animals...
4 big questions - ✔✔Diversity of Life
Distribution and abundance
Fit of form and function
4. Procession of life (common design)
Individual - ✔✔Birth and death are discrete events and happen only once
Population - ✔✔Birth and death, continuous, produce dynamics (birth/year, death/year etc.)
, Community - ✔✔Many populations of different species and how their interaction affect birth
and death rates
Ecosystem - ✔✔Several biotic communities plus abiotic factors
Landscape - ✔✔patchwork of ecosystems (How energy and nutrients exchanged between
ecosystems)
Global scale: - ✔✔Different types of ecosystems or biomes (biodiversity in different biomes)
Three kinds of dynamics - ✔✔The 1rst fact: Organisms are born and eventually die. This gives
rise to the first kind of dynamics
Population dynamics
2nd fact: Organisms need energy for growth, survival and reproduction.
Foraging dynamics
3rd fact: Organisms change over time
Evolutionary dynamics
Population - ✔✔A group of interbreeding individuals of a species in a defined area at a given
time
Exponential Growth - ✔✔Population size (N) changes over time (t) as a function births & deaths
(Δ means "change")
b (birth rate/individual)
d (death rate/individual)
b - d (symbolized as "r")
