BIO: Unit 1 Study Guide
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Last updated 7:15 PM on 10/5/22
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59 Terms
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Density Independent
Limiting factors that have nothing to do with population size.
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Generalist
Organisms that feed on a wide variety of food and have a wider niche.
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max number of individuals
Carrying capacity: The ________ an environment can support.
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Emigration
The movement of individuals out of an area.
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Immigration
The movement of individuals into an area.
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Climax community
The state where populations of plants or animals remain stable and exist in balance with each other and their environment.
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Density
________ dependent: Limiting factors that depend on population size.
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Competitive Exclusion Principle
Two species with identical niches can not coexist for prolonged periods of time.
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Homeostasis
The state of steady internal, physical, and chemical conditions- Equilibrium.
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Specialist
Organisms that feed on specific things and have a narrower niche.
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Producers
Organisms that capture energy from sunlight through photosynthesis and provide food from inorganic compounds.
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Tertiary
Organisms that obtain energy by feeding on both primary and secondary consumers.
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Commensalism
One individual benefits and the other is neither harmed nor helped.
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Parasitism
One individual lives on /in another individual and causes harm.
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population growth
Limiting Factors: Factors that cause ________ to decrease.
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Independent Variables
Set by the investigator; represented on the x- axis.
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Primary Consumers
Organisms that feed on producers.
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Niche
A role an organism plays in a community.
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Pioneer Organisms
An organism that populates a region after a natural disaster, mass extinction, or any other event that kills off most life in the area.
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Mutualism
Both species benefit from the relationship.
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Exponential population growth
The trend that occurs when population growth increases with population size.
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Mutualism
Both species benefit from the relationship
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Commensalism
One individual benefits and the other is neither harmed nor helped
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Example of Commensalism
Frogs use plants as protection and the plants are not helped or harmed
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Parasitism
One individual lives on/in another individual and causes harm
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Example of Parasitism
Mosquitoes take blood from humans and humans get itchy and can catch disease
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Competitive Exclusion Principle
Two species with identical niches cannot coexist for prolonged periods of time
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Generalist
Organisms that feed on a wide variety of food and have a wider niche
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Specialist
Organisms that feed on specific things and have a narrower niche
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Niche
A role an organism plays in a community
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Limiting Factors
Factors that cause population growth to decrease
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Density-dependent
Limiting factors that depend on population size
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Example
Overcrowding, disease, etc
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Density Independent
Limiting factors that have nothing to do with population size
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Example
Unusual weather, natural disasters, seasonal cycles, human impacts, etc
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Carrying capacity
The max number of individuals an environment can support
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Exponential population growth
The trend that occurs when population growth increases with population size
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Immigration
The movement of individuals into an area
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Emigration
The movement of individuals out of an area
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Primary Succession
no soil, bare rock
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Secondary Succession
Soil is present
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Climax community
The state where populations of plants or animals remain stable and exist in balance with each other and their environment
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Pioneer Organisms
An organism that populates a region after a natural disaster, mass extinction, or any other event that kills off most life in the area
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Producers
Organisms that capture energy from sunlight through photosynthesis and provide food from inorganic compounds
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Primary Consumers
Organisms that feed on producers
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Secondary
Organisms that feed on primary consumers
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Tertiary
Organisms that obtain energy by feeding on both primary and secondary consumers
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What is Scientific Method
An observation/Inference
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Steps
Observation, Ask a Question, Research or use prior knowledge, hypothesis, experiment, analyze data, conclusion, report
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Controlled Experiment
an experiment where all variables in an experimental group and a comparison control group are kept the same except for one variable that is changed
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Dependent Variables
Measured during the investigation; represented on the y-axis
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Independent Variables
Set by the investigator; represented on the x-axis
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PURPOSE
To collect Data
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Qualitative Data
Data collected that is NOT numbers (color/shape patterns, words, etc.)
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Quantitative Data
Data represented by numbers and statistics
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Biotic Factors
Living factors in an environment
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Abiotic Factors
Non-living factors in an environment
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Asexual
One organism makes an exact genetic copy of itself
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Sexual
Two organisms merge genetics for a genetically mixed product
Flashcards (73)