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33 Cards in this Set
- Front
- Back
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Name of situation where 2 organisms interact and both benefit from it is...
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mutualism
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An organism's "job" or role is referred to as his...
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niche
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The place an organism lives is his....
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habitat
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Situation where 2 organisms interact and one benefits and the other is unaffected is...
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commensalism
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A bunch of birds living in the same tree but utilizing different resources is an example of....
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resource partitioning
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Name given to concept in which no 2 organisms can coexist in exactly the same niche is....
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competitive exclusion principle
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The zone ranging from the upper to the lower limits of living conditions is...
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Range of Tolerance
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The best living condition for an organism is his....
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Optimum
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Inhospitable living conditions for an organism comprise its...
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zones of stress
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Population growth of this type is referred to as..... |
exponential |
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This is an ____ curve. Growth of this type is referred to a ______ model |
S logistical |
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The flatted upper right section of this graph represents the ____ _____ of the population |
carrying capacity |
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If a population exceeds its carrying capacity, then what will happen? |
Some of the population will die. |
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Organisms of the same species who are trying to use the same resources are said to be in ____-specific _____________. |
intra- competition |
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Organisms of different species utilizing the same resources are said to be in ____-specific _________. |
inter- competition |
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The number of males to females in a population is referred to as the.... |
sex ratio |
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Disease, predation, and limited food supply are examples of density _____________ factors. |
dependent |
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Natural disasters like extreme cold, drought, heat, fire, volcanoes, tsunamis are examples of density ____ factors. |
independent |
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An event that is more effective if the population is in close proximity is called a density _____ factor. |
dependent |
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Events that affect all populations, dense or sparse, equally are called density ____ factors. |
independent |
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This formula is called the _____ growth model formula. |
exponential |
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"Nt" and "No" in this formula stand for .... |
Population size at some time Initial population size |
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The "r" and the "t" in this formula stand for.... |
intrinsic growth rate time |
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The percent of growth per year is called the.... |
intrinsic growth rate (r) |
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When using intrinsic growth rate in this formula, then a growth rate of 50% would be entered as.... |
0.5 |
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The maximum potential for growth of a population under ideal conditions with unlimited resources is called.... |
intrinsic growth rate |
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Number of individuals in a population is on the y-axis and time is the x-axis. This shows 3 different types of ____ curves. |
survivorship |
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Three curve types top to bottom are I, II, III. Which one would rats belong to? Elephants? |
rats = III elephants = I |
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A __-selected species is likely to overshoot the carrying capacity and die?
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r
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A species that has a low growth rate and cares for its few young is likely to be a ____-selected species. |
k |
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When blood relatives breed with each other they often produce offspring that have an impaired ability to survive and reproduce. We call this ____ _____ |
Inbreeding depression |
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The study of factors that cause populations to increase or decrease is called ____ ____. |
population ecology |
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The minimum number of individuals a population can have and still survive is called.... |
critical number |
