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44 Cards in this Set
- Front
- Back
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Where are the more developed countries (MDCs) found? |
Europe and North America |
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________ occurs when one organism eats another organism. |
Predation |
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All of the regions on Earth where living organisms are found are collectively referred to as the_______. |
Biosphere |
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Density-dependent factors tend to be ______. |
Biotic |
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Which of the following are needed to determine if a population is growing or shrinking? 1. Number of births 2. Age of individuals 3. Number of individuals in the population 4. Number of deaths |
Number of births Number of deaths |
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The total disappearance of a species or higher group is called _______. |
Extinction |
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What is displayed in an age structure diagram? |
Number of individuals within each age group |
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The two types of population growth models are: |
Exponential Logistic |
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Forest fires in hills above San Diego are examples of a density _______________ population growth factor |
density-independent |
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A population that grows without limit is said to be experiencing __________ growth |
exponential |
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When resources are unlimited and a population grows at its maximum rate, this is called the _______________________ potential for the population |
Biotic |
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An individual living thing is an ___________. |
Organism |
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Select all of the factors that affect the demographics of a population. Availability of resources Age structure If the population lives in LDCs or MDCs Patterns of Survivorship |
Availability of resources Age structure Patterns of survivorship |
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A group of individuals of the same species that live in a given location at the same time is called a ________________. |
Population |
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All of these various groups of species at a particular locale is referred to as a ______________. |
Community |
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_________ occurs when members of the same species attempt to use resources that are limited supply but are necessary for survival. |
Competition |
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Ecology is the study of: |
The biotic components and their interactions plus the physical environment |
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The maximum number of individuals that the environment can support is called the __________ ___________ of a population. |
carrying capacity |
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Which of the following are history patterns exhibited by organisms? Equilibrium life histories density-independent density-dependent predator-prey opportunistic |
Equilibrium life histories Opportunistic |
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The age structure of a population is considered ________. |
A demographic characteristic |
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The discipline of observing and describing an organism in their environment is |
Natural History |
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A population that grows until it reaches its carrying capacity follows a __________ growth pattern |
logistic |
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Characteristics of MDCs include |
Prereproductive age group not expanding Modest growth since 1950 |
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Which of the following are included in an ecosystem? |
Both living organisms and the physical environment |
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Which of the following is an example of a community? Two male song sparrows singing to attract a mate Trout living in a small stream with a rocky bottom Butterflies and bees feeding on flowers in a garden |
Butterflies and bees feeding on flowers in a garden |
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LCDs have the following characteristics |
Large base on the age structure diagram Large Prereproductive group High birth rate |
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The portion of the globe where species can be found is referred to as its _______________. |
Range |
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What is true of LDCs? |
Most of the world's population lives in LDCs Many sub-Saharan African countries are considered LDCs |
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There are countries in which the death rate has declined as well as the birth rate, which is referred to as a demographic transition. This transition has occurred in |
More-developed countries |
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Bald eagles have 1-2 offspring and both parents are involved in caring for the young. These animals mostly likely exhibit a Type ______________ survivorship curve. |
type 1 |
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Components of the environment that support its organisms are called |
resources |
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In a population that is ____________, the majority of the population are adults. |
decreasing |
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Which of the following are characteristics of a population with a high biotic potential? |
Reaches sexual maturity early Reproduces multiple times per year |
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The discipline of observing and describing an organism in their environment is |
Natural History |
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_______ have age structure diagrams characterized by three age classes that are about the same, whereas in the _________ the age structure diagram is largest at its base. |
MDCs/LDCs |
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In a typical predator-prey cycle, the prey increases in numbers, then the predators ________ in numbers, and then the prey __________ in numbers, and the cycle continues. |
increase/decrease |
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Population volume, or the number of individuals per unit area, is also termed population __________. |
density |
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Replacement reproduction means that two parents have ____________. |
2 children |
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Which of the following are characteristics of equilibrium species |
Population size remains close to carrying capacity Individuals are slow to mature Exhibit logistic growth Individuals are of relatively large size |
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Fifty-six percent of the world's human population live in __________. |
Asia |
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Which 2 factors must be considered to determine environmental impact |
Population size Resource consumption per capita |
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___________ time is the length of time that it takes a population to increase its size by a factor of two |
doubling. |
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The central goal of ___________ is to develop models that explain and predict the distribution and abundance of population based on their interactions with an ecosystem |
ecology |
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Good |
Job |
