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Bio Ch4&5 Vocabulary

MD Biology Chapter 4.2, 4.3, 5.1 & 5.2 Vocabulary

Ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions. tolerance
Area where an organism lives, including the biotic and abiotic factors that affect it. habitat
Full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions. niche
Any necessity of life, such as water, nutrients, light, food, or space. resource
Principle that states that no two species can occupy the same niche in the same habitat at the same time. competitive exclusion principle
Interaction in which on organism captures and feeds on another organism. predation
Interaction in which one animal feeds on producers. herbivory
Single species that is not usually abundant in a community yet exerts strong control on the structure of a community. keystone species
Relationship in which two species live close together. symbiosis
Symbiotic relationship in which both species benefit from the relationship. mutualism
Symbiotic relationship in which one organism lives on or inside another organism and harms it. parasitism
Symbiotic relationship in which one organism benefits and the other is neither helped or harmed. commensalism
Series of gradual changes that occur in a community following a disturbance. ecological succession
Succession that occurs in an area in which no trace of a previous community is present. primary succession
First species to populate an area during succession. pioneer species
Type of succession that occurs in an area that was only partially destroyed by disturbances. secondary succession
Number of individuals per unit area. population density
Number of males and females of each age in a population. age structure
Movement of individuals into an area occupied by an existing population. immigration
Movement of individuals out of an area. emigration
Growth pattern in which the individuals in a population reproduce at a constant rate. exponential growth
Growth pattern in which a population's growth slows and then stops following a period of exponential growth. logistic growth
Largest number of individuals of a particular species that a particular environment can support. carrying capacity
Factor that causes population growth to decrease. limiting factor
Limiting factors that depends on population density. density-dependent limiting factor
Limiting factors that affect all populations in similar ways, regardless of the population density. density-independent limiting factor
Created by: LForzley



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