BIOLOGY 182 EXAM 4 ASU
QUESTIONS AND ANSWERS
Ecology: - Correct Answers -the study of how living organisms interact with their
environment.
What was ecology's central goals? - Correct Answers -to understand the distribution
and abundance of organisms on the planet.
What does ecology provide? - Correct Answers -a scientific foundation for the
conservation of species and their habitats.
At what four main levels was ecological research performed? - Correct Answers --
Organismal ecologists
- Population ecologists
- Community ecologists
- Ecosystem ecologists
Organismal ecologists: - Correct Answers -explore the morphological, physiological, and
behavioural adaptations that allow individuals to live successfully in a particular area.
Population ecologists: - Correct Answers -focus on how the numbers of individuals in a
population change over time.
Community ecologists: - Correct Answers -study the nature and consequences of the
interactions among species in a community, including how groups of species respond to
natural disturbances such as fire and flood.
Ecosystem ecologists: - Correct Answers -study how nutrients and energy move among
and between organisms and the surrounding atmosphere and soil or water.
Conservation biology: - Correct Answers -is the effort to study, preserve, and restore
threatened populations, communities, and ecosystems.
An ecosystem consists of: - Correct Answers -all the biotic and abiotic components that
affect life in a certain area.
Biotic (living): - Correct Answers -consists of populations of individuals that are
organised into communities of multiple species.
Abiotic: - Correct Answers -include temperature, precipitation, wind, and sunlight.
, What does ecology focus on? - Correct Answers -the interplay between the biotic and
abiotic, between organisms and their physical environment.
What are the key physical factors that shape the environments in aquatic ecosystems?
What do they determine? - Correct Answers -water depth and the rate of water
movement. Determine the distribution and abundance of aquatic species.
What does water depth dictate? - Correct Answers -how much light reaches the
organisms that live in a particular region.
Water depth increases when? - Correct Answers -the amount and type of wavelengths
available to organisms changes dramatically.
Light has a major influence on productivity - - Correct Answers -the total amount of
carbon fixed by photosynthesis per unit area per year.
the type and amount of water flow has an influence in? - Correct Answers -aquatic
environments
Lakes and ponds are distinguished by size - - Correct Answers -ponds are smaller than
lakes - and both exclusively are freshwater environments.
What are the three zones of water depth that lakes and ponds have? - Correct Answers
-- littoral zone
- limnetic zone
- benthic zone
Littoral zone: - Correct Answers -consists of the shallow waters along the shore, where
flowing plants are rooted
limnetic zone: - Correct Answers -is offshore and compromises water that receives
enough light to support photosynthesis
Benthic zone: - Correct Answers -is made up of the bottom, or substrate.
Regions of the littoral, limnetic, and benthic zones that receive sunlight are part of what
zone? - Correct Answers -photic zone
Portions of the lake or pond that do not receive sunlight make up part of what zone? -
Correct Answers -photic zone
In what zone do plankton and fish live in? - Correct Answers -photic zone
In what zone are detritivores common in? - Correct Answers -benthic zone
QUESTIONS AND ANSWERS
Ecology: - Correct Answers -the study of how living organisms interact with their
environment.
What was ecology's central goals? - Correct Answers -to understand the distribution
and abundance of organisms on the planet.
What does ecology provide? - Correct Answers -a scientific foundation for the
conservation of species and their habitats.
At what four main levels was ecological research performed? - Correct Answers --
Organismal ecologists
- Population ecologists
- Community ecologists
- Ecosystem ecologists
Organismal ecologists: - Correct Answers -explore the morphological, physiological, and
behavioural adaptations that allow individuals to live successfully in a particular area.
Population ecologists: - Correct Answers -focus on how the numbers of individuals in a
population change over time.
Community ecologists: - Correct Answers -study the nature and consequences of the
interactions among species in a community, including how groups of species respond to
natural disturbances such as fire and flood.
Ecosystem ecologists: - Correct Answers -study how nutrients and energy move among
and between organisms and the surrounding atmosphere and soil or water.
Conservation biology: - Correct Answers -is the effort to study, preserve, and restore
threatened populations, communities, and ecosystems.
An ecosystem consists of: - Correct Answers -all the biotic and abiotic components that
affect life in a certain area.
Biotic (living): - Correct Answers -consists of populations of individuals that are
organised into communities of multiple species.
Abiotic: - Correct Answers -include temperature, precipitation, wind, and sunlight.
, What does ecology focus on? - Correct Answers -the interplay between the biotic and
abiotic, between organisms and their physical environment.
What are the key physical factors that shape the environments in aquatic ecosystems?
What do they determine? - Correct Answers -water depth and the rate of water
movement. Determine the distribution and abundance of aquatic species.
What does water depth dictate? - Correct Answers -how much light reaches the
organisms that live in a particular region.
Water depth increases when? - Correct Answers -the amount and type of wavelengths
available to organisms changes dramatically.
Light has a major influence on productivity - - Correct Answers -the total amount of
carbon fixed by photosynthesis per unit area per year.
the type and amount of water flow has an influence in? - Correct Answers -aquatic
environments
Lakes and ponds are distinguished by size - - Correct Answers -ponds are smaller than
lakes - and both exclusively are freshwater environments.
What are the three zones of water depth that lakes and ponds have? - Correct Answers
-- littoral zone
- limnetic zone
- benthic zone
Littoral zone: - Correct Answers -consists of the shallow waters along the shore, where
flowing plants are rooted
limnetic zone: - Correct Answers -is offshore and compromises water that receives
enough light to support photosynthesis
Benthic zone: - Correct Answers -is made up of the bottom, or substrate.
Regions of the littoral, limnetic, and benthic zones that receive sunlight are part of what
zone? - Correct Answers -photic zone
Portions of the lake or pond that do not receive sunlight make up part of what zone? -
Correct Answers -photic zone
In what zone do plankton and fish live in? - Correct Answers -photic zone
In what zone are detritivores common in? - Correct Answers -benthic zone
