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1 | |
When studying populations, it is important to include such factors as |
| | A) | Age distribution. |
| | B) | Sex ratio. |
| | C) | Gene flow. |
| | D) | All of the above. |
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2 | |
Which statement is generally true? |
| | A) | As population density increases, population pressure decreases. |
| | B) | As population density increases, population pressure increases. |
| | C) | Population pressure and population pressure are not related. |
| | D) | None of the above. |
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3 | |
The theoretical maximum rate of reproduction is known as the |
| | A) | Reproductive capacity. |
| | B) | Biotic ratio. |
| | C) | Relative species survival rate. |
| | D) | All of the above. |
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4 | |
During the lag phase of the population growth curve |
| | A) | Both natality and mortality are low. |
| | B) | The population is in a state of stable equilibrium. |
| | C) | Exponential growth is occurring but is not yet observable. |
| | D) | None of the above. |
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5 | |
When discussing population size, "environmental resistance" and "carrying capacity" are known as |
| | A) | Barriers to growth. |
| | B) | Limiting factors. |
| | C) | Habitat challenges. |
| | D) | None of the above. |
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6 | |
When discussing the factors that may limit the growth of a population, it is important to consider |
| | A) | Nitrogen. |
| | B) | Water. |
| | C) | Energy availability. |
| | D) | All of the above. |
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7 | |
Wine can naturally reach an alcohol concentration of __________ because |
| | A) | 5% to 8% / at higher alcohol concentrations, the yeast population stops growing and eventually declines. |
| | B) | 12% to 15% / at higher alcohol concentrations, the yeast population stops growing and eventually declines. |
| | C) | 5% to 8% / at higher alcohol concentrations, the yeast population begins to metabolize the excess alcohol. |
| | D) | 12% to 15% / at higher alcohol concentrations, the population begins to metabolize the excess alcohol. |
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8 | |
Which statement(s) is/are true? |
| | A) | The population sizes of two kinds of organisms may be interdependent if each is the primarily limiting factor of the other. |
| | B) | The population sizes of two kinds of organisms are not normally directly interdependent but may be indirectly interdependent. |
| | C) | It is usually considered accidental if the populations sizes of two kinds of organisms seem to be interdependent. |
| | D) | Two populations will be interdependent only if they have a common food supply. |
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9 | |
Crowded living conditions resulting in a decrease in the number of rat litters would be considered an __________ factor in helping to control population. |
| | A) | Extrinsic |
| | B) | Intrinsic |
| | C) | Environmental |
| | D) | Ethnic |
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10 | |
Density independent factors in population control include |
| | A) | Rainstorms and killing frosts. |
| | B) | Parasitic epidemics. |
| | C) | Hunting and fishing. |
| | D) | All of the above. |
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11 | |
Which of the following statements is/are true? |
| | A) | Planet Earth would produce enough food to feed the people of the world, if government policies allowed. |
| | B) | Planet Earth cannot produce enough food to feed all people, although sometimes food is available but other factors prevent its equitable distribution. |
| | C) | Sometimes adequate amounts of food are available, but physical conditions and cultural mores prevent it from being eaten. |
| | D) | All of the above. |
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12 | |
The availability of energy is a limiting factor that affects |
| | A) | Transportation. |
| | B) | Building. |
| | C) | Food production. |
| | D) | All of the above. |
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13 | |
The interaction among organisms affects the human carrying capacity because |
| | A) | Humans have parasites and are occasionally predators. |
| | B) | Humans have mutualistic relationships with many plants and animals. |
| | C) | Humans compete with animals for the food produced. |
| | D) | All of the above. |
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14 | |
As humans convert more and more land to agricultural and other purposes, organisms, including other humans, are displaced and problems of waste disposal arise. This could lead to |
| | A) | Certain organisms entering the death phase on the growth curve. |
| | B) | An increase in famine. |
| | C) | A decrease in available labor to work the lands. |
| | D) | All of the above. |
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15 | |
Humans are different from most other organisms because they can |
| | A) | Predict the outcome of specific courses of action. |
| | B) | Make decisions based on historical, social, cultural, ethical, and personal considerations. |
| | C) | Use interdisciplinary resources to solve problems facing the species. |
| | D) | All of the above. |
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16 | |
As population density increases, which one of the following is likely to occur? |
| | A) | natality will increase |
| | B) | mortality will decrease |
| | C) | the population will experience exponential growth |
| | D) | individuals will migrate from the area of highest density |
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17 | |
Density-independent limiting factors |
| | A) | increase in intensity as the population increases. |
| | B) | are unrelated to population size. |
| | C) | usually influence the size of populations of large animals. |
| | D) | never affect population size. |
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18 | |
Which one of the following is NOT the direct result of increasing human population? |
| | A) | extinction of some kinds of animals |
| | B) | increased standard of living |
| | C) | decreased availability of energy |
| | D) | pollution |
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19 | |
Populations of organisms that are in small, confined situations often have their population limited by |
| | A) | the production of their own wastes. |
| | B) | an inability to reproduce. |
| | C) | reduced biotic potential. |
| | D) | increased energy input. |
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20 | |
A population made up primarily of prereproductive individuals will |
| | A) | increase rapidly in the future. |
| | B) | become extinct. |
| | C) | rarely occur. |
| | D) | remain stable for several generations. |
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21 | |
Some organisms have a low reproductive capacity but are very successful because |
| | A) | they have a short life span. |
| | B) | they have high mortality. |
| | C) | most of their offspring live. |
| | D) | they do not compete with other organisms. |
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22 | |
Which one of the following is an extrinsic limiting factor? |
| | A) | fights between males over females |
| | B) | competition over food |
| | C) | death due to unusual weather |
| | D) | increased sexual activity |
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23 | |
Listed below are the sex ratios for four populations. All other things being equal (including current population size), which population should experience the greatest future growth? |
| | A) | 1 male: 1 female |
| | B) | 2 male: 1 female |
| | C) | 1 male: 2 female |
| | D) | 3 male: 2 female |
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24 | |
Listed below are the natality and mortality numbers for four populations. All other things being equal, which population will experience the greatest growth? |
| | A) | natality = 26/1000; mortality = 17/1000 |
| | B) | natality = 19/1000; mortality = 8/1000 |
| | C) | natality = 13/1000; mortality = 25/1000 |
| | D) | natality = 11/1000; mortality = 5/1000 |
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25 | |
Mortality exceeds natality during the _____ phase. |
| | A) | death |
| | B) | lag |
| | C) | stable equilibrium |
| | D) | exponential growth |
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26 | |
An exponential increase: |
| | A) | 100, 200, 300, 400, 500. |
| | B) | 1, 2, 3, 4, 5. |
| | C) | 2, 4, 8, 16, 32. |
| | D) | 5, 10, 15, 20, 25. |
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27 | |
The current human population is experiencing |
| | A) | a population decline. |
| | B) | slow steady growth. |
| | C) | stable equilibrium. |
| | D) | exponential growth. |
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28 | |
Increasing a population's food supply may directly increase |
| | A) | environmental resistance on the population. |
| | B) | the carrying capacity for the population. |
| | C) | the population's mortality. |
| | D) | population pressure. |
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29 | |
When yeasts ferment the sugar in grape juice, they produce ethyl alcohol. When alcohol concentration reaches a certain level, the yeast population declines and eventually dies. In this example, population growth of the yeast is stopped by |
| | A) | limited space. |
| | B) | limited food supply. |
| | C) | accumulation of waste. |
| | D) | disease. |
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