BIO 370 Exam 1 Question and answers
correctly solved 2025/2026
ecology - correct answer ✔The study of the relationships between organisms and their environment.
Levels of organization - correct answer ✔individual, population, communities, ecosystem, biosphere
individual - correct answer ✔least broad level of organization, study o factors affecting a single
organism. ex) behavior, growth, diet
population - correct answer ✔a group of individuals of a single species living in a defined area ex)
brown bear population on Kodiak Island
population ecology - correct answer ✔the study of factors affecting population structure and processes
ex) driving factors affecting population
communities - correct answer ✔assemblages of different populations that live together in a defined
area
community ecology - correct answer ✔study of the interactions among species in a defined area ex)
why/which organisms are associated, how organisms interact, food-web structure
ecosystem - correct answer ✔all organisms AND abiotic factors interactions
ecosystem ecology - correct answer ✔study focusing on factors affecting ecosystem function and
structure ex) nutrient availabilty
,biosphere - correct answer ✔ALL parts of the earth supporting life, ecological investigations at a global
scale. ex) how will climate change affect food production on a global scale
climate - correct answer ✔long term trends in weather conditions for a specified period and region,
major driver of environmental conditions and therefor biological communities and diversity
Factors that control climate - correct answer ✔uneven heating of the earth, latitude, tilt of the earth,
landforms, water bodies, elevation
air circulation - correct answer ✔does NOT move directly north or south, affected by Coriolis Effect
Coriolis Effect - correct answer ✔A phenomenon that causes fluids, like water and air, to curve as they
travel across or above Earth's surface
Coriolis Effect in Northern Hemisphere - correct answer ✔causes fluids to deflect right, storms will
rotate counter clockwise
Coriolis Effect in Southern Hemisphere - correct answer ✔causes fluids to deflect left, storms will rotate
clockwise
Climate diagrams - correct answer ✔a visual representation of a region's average monthly temperature
and precipitation, precip > temp enough moisture for plant growth, temp > precip evaporation rate is
larger than the preiciptation. Even temp = equator
Soil - correct answer ✔foundation of terrestrial environment. O horizon, A horizon, B horizon, C
horizon, R horizon
soil composition and structure - correct answer ✔based on interaction between climate (moisture
content), biota, topography (mountain side), and geology (mineral content)
, O horizon - correct answer ✔organic horizon. upper, surface layer is fallen leaves, twigs, and plant
material that may be partially fragmented. Deeper layer is highly fragmented and partially decomposed
organic material.
A horizon - correct answer ✔mix of mineral materials such as clay, silt, and sand and organic matter
from the O horizon
B horizon - correct answer ✔depositional horizon, materials leached (organic and inorganic) from the A
horizon
C horizon - correct answer ✔weathered, parent rock material. weathering produces fragments of the
parent rock.
R horizon - correct answer ✔Bedrock
Factors influencing aquatic communities - correct answer ✔salinity, temperature, oxygen, current, light
hydrologic cycle - correct answer ✔the movement of water through the biosphere, driven by solar
energy. differential heating of atmosphere = wind = evaporation
water density - correct answer ✔800x denser than air @ sea level, reduced effects of gravity,
buoyancy, resistance to movement - less compressibility than air
water viscosity - correct answer ✔60x more viscous than air, large organisms can remain suspended,
thrust against water
water light availability - correct answer ✔photic zone, only about 200 m in open ocean, generally much
less in freshwater
correctly solved 2025/2026
ecology - correct answer ✔The study of the relationships between organisms and their environment.
Levels of organization - correct answer ✔individual, population, communities, ecosystem, biosphere
individual - correct answer ✔least broad level of organization, study o factors affecting a single
organism. ex) behavior, growth, diet
population - correct answer ✔a group of individuals of a single species living in a defined area ex)
brown bear population on Kodiak Island
population ecology - correct answer ✔the study of factors affecting population structure and processes
ex) driving factors affecting population
communities - correct answer ✔assemblages of different populations that live together in a defined
area
community ecology - correct answer ✔study of the interactions among species in a defined area ex)
why/which organisms are associated, how organisms interact, food-web structure
ecosystem - correct answer ✔all organisms AND abiotic factors interactions
ecosystem ecology - correct answer ✔study focusing on factors affecting ecosystem function and
structure ex) nutrient availabilty
,biosphere - correct answer ✔ALL parts of the earth supporting life, ecological investigations at a global
scale. ex) how will climate change affect food production on a global scale
climate - correct answer ✔long term trends in weather conditions for a specified period and region,
major driver of environmental conditions and therefor biological communities and diversity
Factors that control climate - correct answer ✔uneven heating of the earth, latitude, tilt of the earth,
landforms, water bodies, elevation
air circulation - correct answer ✔does NOT move directly north or south, affected by Coriolis Effect
Coriolis Effect - correct answer ✔A phenomenon that causes fluids, like water and air, to curve as they
travel across or above Earth's surface
Coriolis Effect in Northern Hemisphere - correct answer ✔causes fluids to deflect right, storms will
rotate counter clockwise
Coriolis Effect in Southern Hemisphere - correct answer ✔causes fluids to deflect left, storms will rotate
clockwise
Climate diagrams - correct answer ✔a visual representation of a region's average monthly temperature
and precipitation, precip > temp enough moisture for plant growth, temp > precip evaporation rate is
larger than the preiciptation. Even temp = equator
Soil - correct answer ✔foundation of terrestrial environment. O horizon, A horizon, B horizon, C
horizon, R horizon
soil composition and structure - correct answer ✔based on interaction between climate (moisture
content), biota, topography (mountain side), and geology (mineral content)
, O horizon - correct answer ✔organic horizon. upper, surface layer is fallen leaves, twigs, and plant
material that may be partially fragmented. Deeper layer is highly fragmented and partially decomposed
organic material.
A horizon - correct answer ✔mix of mineral materials such as clay, silt, and sand and organic matter
from the O horizon
B horizon - correct answer ✔depositional horizon, materials leached (organic and inorganic) from the A
horizon
C horizon - correct answer ✔weathered, parent rock material. weathering produces fragments of the
parent rock.
R horizon - correct answer ✔Bedrock
Factors influencing aquatic communities - correct answer ✔salinity, temperature, oxygen, current, light
hydrologic cycle - correct answer ✔the movement of water through the biosphere, driven by solar
energy. differential heating of atmosphere = wind = evaporation
water density - correct answer ✔800x denser than air @ sea level, reduced effects of gravity,
buoyancy, resistance to movement - less compressibility than air
water viscosity - correct answer ✔60x more viscous than air, large organisms can remain suspended,
thrust against water
water light availability - correct answer ✔photic zone, only about 200 m in open ocean, generally much
less in freshwater
