BIOL1070 MIDTERM II EXAM Q & A
Clicker questions
What happens when we over-fish krill from the Antarctic ecosystem?
a. The ecosystem will collapse
b. The krill niche will be occupied by the most closely related
species c. The niches of the other species in the ecosystem will shift
d. All the specie connected to krill will go extinct
Pic on phone (Wednesday October 12, 2016) Answer: D
Which statement is true about the within-habitat diversity indices for the 3 woodlots?
A) The browns woods woodlot has the lowest alpha index but the highest Shannon Diversity
Index
B) All 3 woodlots have the same Shannon Diversity index, even though North Campus
Ravine has double the species richness
C) Doubling the number of individuals in the Dairy Bush did not change either the
alpha diversity of the Shannon Diversity
D) Both the Dairy Bush and North Campus Ravine have the same Shanna Diversity Index
Similar test questions: don’t worry about calculation
- Example question: which population would most likely have a larger alpha
Which biome are we in right now?
a. Tropical
b. Boreal/tundra
c. Savanna
d. Desert
e. temperate
Biodiversity
- the variability among living organisms from all sources including, terrestrial, marine
,BIOL1070 MIDTERM II EXAM Q & A
and other aquatic ecosystems and the ecological complexes of which they are part
- the variety of species and ecosystems on Earth and the ecological processes of which they
are a part; three levels (genetic, species, ecosystem)
Species richness
Number of species present in an ecosystem or sample
- Number of species per specified sample area OR specified number of individuals
Small scale diversity can be estimated
Large scale diversity is constantly increasing, does not level off
Global scale: Why doesn’t Ontario have the same species as
Costa Rica?
- Climate: temperature and climate
- Human interaction
Regional scale: Why are there different types of trees in
southern versus northern Ontario?
- Soil quality
- Pollution
- Altitude (elevation)
- Difference if species and specie interactions (plants, insects, trees)
Local scale: Why don’t all three campus woodlots have the
same species in them?
- Light (canopy coverage)
- Marshy Arbo vs. Dairy Bush (different ecosystems)
Ecological factors that place limits on a species’ geographic range?
- Abiotic factors.
- Dispersal
- Biological interactions
- Habitat selection
, BIOL1070 MIDTERM II EXAM Q & A
Examples of abiotic factors?
- Temperature
- Precipitation
- Elevation
- Light
- Soil quality
- Salinity
Biomes ecosystems on a global scale
- Distinguishing biomes mountains are a large influence
Clicker questions
What happens when we over-fish krill from the Antarctic ecosystem?
a. The ecosystem will collapse
b. The krill niche will be occupied by the most closely related
species c. The niches of the other species in the ecosystem will shift
d. All the specie connected to krill will go extinct
Pic on phone (Wednesday October 12, 2016) Answer: D
Which statement is true about the within-habitat diversity indices for the 3 woodlots?
A) The browns woods woodlot has the lowest alpha index but the highest Shannon Diversity
Index
B) All 3 woodlots have the same Shannon Diversity index, even though North Campus
Ravine has double the species richness
C) Doubling the number of individuals in the Dairy Bush did not change either the
alpha diversity of the Shannon Diversity
D) Both the Dairy Bush and North Campus Ravine have the same Shanna Diversity Index
Similar test questions: don’t worry about calculation
- Example question: which population would most likely have a larger alpha
Which biome are we in right now?
a. Tropical
b. Boreal/tundra
c. Savanna
d. Desert
e. temperate
Biodiversity
- the variability among living organisms from all sources including, terrestrial, marine
,BIOL1070 MIDTERM II EXAM Q & A
and other aquatic ecosystems and the ecological complexes of which they are part
- the variety of species and ecosystems on Earth and the ecological processes of which they
are a part; three levels (genetic, species, ecosystem)
Species richness
Number of species present in an ecosystem or sample
- Number of species per specified sample area OR specified number of individuals
Small scale diversity can be estimated
Large scale diversity is constantly increasing, does not level off
Global scale: Why doesn’t Ontario have the same species as
Costa Rica?
- Climate: temperature and climate
- Human interaction
Regional scale: Why are there different types of trees in
southern versus northern Ontario?
- Soil quality
- Pollution
- Altitude (elevation)
- Difference if species and specie interactions (plants, insects, trees)
Local scale: Why don’t all three campus woodlots have the
same species in them?
- Light (canopy coverage)
- Marshy Arbo vs. Dairy Bush (different ecosystems)
Ecological factors that place limits on a species’ geographic range?
- Abiotic factors.
- Dispersal
- Biological interactions
- Habitat selection
, BIOL1070 MIDTERM II EXAM Q & A
Examples of abiotic factors?
- Temperature
- Precipitation
- Elevation
- Light
- Soil quality
- Salinity
Biomes ecosystems on a global scale
- Distinguishing biomes mountains are a large influence
