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41 Cards in this Set
- Front
- Back
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The totality of organisms of the same species observed in a specific geographical region at a particular time |
Population |
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Group of individuals that can interbreed and produce viable offspring |
Species |
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Characteristic genetic material |
Genes |
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Movement of genetic material within a defined group |
Gene flow |
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Number of individuals in a population |
Population size |
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Number of individuals per unit area or volume |
Population Density |
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Why is the Population density is important in a habitat? |
It influences the utilization of the resources in the area. (Higher population density; higher demand for resources) |
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Number of individuals added annually to the present population through reproduction per one thousand individuals |
Birth Rate |
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The number of individuals who die annually per one thousand individuals |
Death Rate |
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Calculate for the doubling time: |
Formula: 70/Growth Rate (%) The population will double in 7 years |
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Calculate for the doubling time: Growth Rate: 5% |
Formula: 70/Growth Rate (%) The population will double in 14 years |
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What are the 3 patterns of spacing? |
Randomly, Clumped, Uniform |
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What are the 3 stages of Growth |
Pre-reproductive, Reproductive, Post-Reproductive |
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Term that refers to the number of males as to the number of females |
Sex Ratio |
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What are the 3 types of population? (the shapes) |
expansive near stationary constictive |
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Population type where BASE of triangle is broad. |
expansive |
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Population type where death = birth |
near stationary |
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Population type where TOP of triangle is broad. |
constrictive |
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What are the 4 phases of population growth?` |
Lag phase, Log/Exponential phase, Plateau phase, Death phase |
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What are the 2 types of growth? |
Arithmetic growth and exponential growth |
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Differential Arithmetic growth and exponential growth. |
Arithmetic growth increases at a constant unit per time, while exponential growth increases by a constant fraction multiplied by the existing population |
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Maximum reproductive rate of a species |
Biotic potential |
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Maximum number of individuals of any species that can be supported by a particular ecosystem on a long term basis |
Carrying capacity |
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Totality of the factors that would tend to limit the population |
Environmental resistance |
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Describe K-Strategists. |
Have long life spans and take care of their young (ex. Mammals, birds, some reptiles) |
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Describe R-Strategists. |
Have short life spans, smaller, produce a large number of offspring |
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When was the lag phase for mankind? |
The stone age |
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What region in the Philippines is the population largest? |
NCR |
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What is the core value of the Philippines mentioned in this chapter? |
Equitable development where everyone has an equal chance to succeed in life |
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Is our increasing population helping the country achieve equitable development? Why? |
No, because demand for resources increase |
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The physiological capacity of a woman to produce a child. |
Fecundity |
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The actual reproductive performance of an individual, a couple, a group, or a population. |
Fertility |
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Rate of births computed for an entire population. |
Crude Birth Rate |
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The average number of children that would be born alive to a woman during her lifetime if she were to pass through her childbearing years conforming to the age-specific fertility rates of a given year. |
Total Fertility Rate |
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A population in equilibrium, with a growth rate of zero, achieved when births plus immigration equal deaths plus emigration. |
Zero Population Growth |
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Rate of deaths computed for an entire population. |
Crude Death Rate |
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The surplus of births over deaths in a population in a given time period. |
Natural Increase |
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The maximum age that human beings could reach under optimum conditions. |
Life Span |
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The average number of additional years a person could expect to live if current mortality trends were to continue for the rest of that person's life. |
Life Expectancy |
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The ratio of the economically dependent part of the population to the productive part; arbitrarily defined as the ratio of the elderly (ages 65 and older) plus the young (under age 15) to the population in the working ages (ages 15-64). |
Dependency Ratio |
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The historical shift of birth and death rates from high to low levels in a population. The decline of mortality usually precedes the decline in fertility, thus resulting in rapid population growth during the transition period. |
Demographic Transition |
