Term
| In years when beech trees produced a large crop of nuts, growth rings were narrow. This is best explained by: |
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Definition
| the tradeoff that exists between growth and reproduction. |
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Term
| Density-dependent and density-independent factors influence the growth of a population by causing changes in the: |
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Definition
| birth rate and death rate. |
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| The number of individuals that can be supported in a given habitat is the: |
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Definition
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Definition
| reflects the number of individuals in various age groups in a population. |
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Definition
| are subject to the pressures of natural selection. |
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Term
| Population density is determined by the number of: |
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Definition
| individuals of a species in a given area. |
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Term
| The graph represents the standard demographic transition—the pattern of population growth that is experienced as a country industrializes. In this graph, the green line represents __________________, the red line represents __________________, and the blue curve represents _________________. |
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Definition
| birth rate; death rate; population growth rate |
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Term
| A population with a higher death rate than birth rate may still have positive growth. This statement is: |
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Definition
| correct; if immigration rates plus birth rates are greater than death rate plus emigration rate, population growth will still be positive even if birth rate is lower than death rate alone. |
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Definition
| is a group of coexisting organisms capable of interbreeding. |
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Term
| When more than two members of the same species live in the same place at the same time, they constitute: |
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Definition
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Term
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Definition
| has been achieved using laboratory selection for delayed reproduction. |
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Term
| A population's survivorship curve is a downward-sloping straight line when: |
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Definition
| the mortality rate is constant regardless of age. |
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Term
| The term [(K–N)/K] influences a population growth curve such that: |
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Definition
| when N equals K, population growth is zero. |
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Term
| When plants of a particular species are growing too close to each other, crowding may eventually lead to mortality, known as self-thinning. This type of mortality is: |
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Definition
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Term
| In the equation for logistic growth, when N=K: |
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Definition
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Term
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Definition
| cannot weed out from a population any alleles that do not reduce an individual's relative reproductive success, even if these alleles increase an individual's risk of dying. |
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Term
| The logistic growth rate of a population is BEST represented by the equation: |
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Definition
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| A survivorship curve that had low survivorship in the beginning and stabilized after high initial mortality would be characteristic for which type of organism? |
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Definition
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Term
| Mutations that cause sickness and death after reproduction: |
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Definition
| can be passed on to future generations. |
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Term
| In the graph, curve A is the ____________________ and curve B is the ___________________. |
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Definition
| xponential growth curve; logistic growth curve |
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