Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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An example of a plant crop species native to Canada is
a. | corn | b. | strawberries | c. | wheat | d. | potatoes |
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2.
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Which of the following is a true statement regarding the differences between
agroecosystems and natural ecosystems?
a. | Agroecosystems have non-native species of plant crops or animals. | b. | Agroecosystems have
less uniform abiotic features. | c. | Natural ecosystems have lower
biodiversity. | d. | Agroecosystems are used less intensively by humans. |
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3.
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One example of a natural fertilizer is
a. | ammonia | b. | potash | c. | wood
ashes | d. | potassium |
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4.
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Which of the following is a benefit of using synthetic fertilizers over natural
fertilizers?
a. | Nutrients are released quickly. | b. | There is less danger of
overfertilizing. | c. | Synthetic fertilizers can improve soil structure. | d. | Synthetic
fertilizers benefit nutrient cycling. |
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5.
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In which alternative farming practice do farmers leave the ground undisturbed
after the crop is harvested instead of ploughing the remaining vegetation into the soil?
a. | crop selection | b. | crop rotation | c. | no-tillage
farming | d. | all of the above |
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6.
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Pesticides used to kill plant pests are called
a. | molluscicides | b. | piscicides | c. | herbicides | d. | insecticides |
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7.
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An example of a narrow-spectrum pesticide is
a. | DDT | b. | rotenone | c. | glyphosate | d. | Bt |
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8.
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The system of agriculture that relies on non-synthetic pesticides and
fertilizers is called
a. | no-tillage farming | b. | crop rotation | c. | crop
selection | d. | organic farming |
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9.
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Which organic farming technique allows predatory insects, mites, and
disease-causing micro-organisms to prey on and infect prey species?
a. | baiting pest | b. | mixed planting | c. | altered
timing | d. | biological control |
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10.
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A strategy to control pests that uses a combination of physical, chemical, and
biological
controls is
a. | pesticide use | b. | altered timing | c. | integrated pest
management | d. | baiting pests |
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11.
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Which of the following is a feature of an urban ecosystem?
a. | dominated by plants | b. | cannot be sustained without inputs from and
outputs to other ecosystems | c. | high density and diversity of native
species | d. | complex natural food webs |
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12.
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Soil contains
a. | dissolved nutrients | b. | air spaces | c. | decomposing organic
matter | d. | all of the above |
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13.
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The process by which nutrients are removed from soil as water passes through it
is called
a. | leaching | b. | bioaccumulation | c. | bioamplification | d. | organic farming |
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14.
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One disadvantage of natural fertilizers compared to synthetic fertilizers is
that
a. | the production is energy intensive | b. | the application process is more
difficult | c. | they cause water pollution | d. | nutrients are lost from the soil through
leaching |
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15.
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Which of the following is an accurate description of the food web of a natural
grassland?
a. | Producers present are a monoculture of potato plants. | b. | It includes vary few
carnivores, if any. | c. | The food web contains a single producer and
some pest species. | d. | Herbivores present are numerous species of
insects, rodents, and sparrows. |
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16.
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The increase in concentration of a substance as it moves higher up the food web
is called
a. | bioaccumulation | b. | bioamplification | c. | monoculture | d. | leaching |
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17.
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All of the following statements are true regarding monocultures,
except
a. | Monocultures involve the cultivation of a single crop in an area. | b. | Monocultures are
able to sustain themselves naturally. | c. | In a monoculture, biodiversity is
reduced. | d. | In a monoculture, farmers attempt to create uniform growing conditions and eliminate
all diseases, competitors, and pests. |
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18.
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One of the most important nutrients required by plants to grow is
a. | phosphorus | b. | iron | c. | copper | d. | zinc |
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19.
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Which of the following species is likely to be most affected by the
bioamplification of toxins in the food system?
a. | zooplankton | b. | phytoplankton | c. | freshwater
shrimp | d. | polar bear |
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20.
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The sum of all the impacts each person has on the environment is called
a. | leaching | b. | bioamplification | c. | ecological
footprint | d. | bioaccumulation |
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