1) A student claims that a firefly population experienced a change that made it impossible for the insects to flash their lights. Which of these changes would support the students claim? a) The population would increase, because predators could no longer see the fireflies to catch them as prey. b) The population would decrease, because the male fireflies could not attract mates without their lights. c) The population would increase, because more fireflies would move into the unlit area, thinking it was empty. d) The population would decrease, because prey for the fireflies would no longer be able to see their lights. 2) If the population of Species 1 decreased, what would most likely happen first to Species 2? a) Species 2 would increase in number. b) Species 2 would decrease in number c) Species 2 would become extinct. d) D Species 2 would find a different host. 3) What has been the overall impact of the new program on the spread of zebra mussels? a) a decrease in the number of zebra mussels along the waterways b) an increase in the number of zebra mussels along the waterways c) no effect because more time is needed to determine an outcome d) no change in the number of zebra mussels infecting the waterways 4) Select the three factors that may have caused this decrease in the rabbit population. a) an increase in the predator population b) an increase in the producer population c) a disease in the rabbit population d) a slight decrease in the rainfall e) a decrease in the producer population 5) Based on the two graphs, which statement best describes the relationship between the use of motor vehicles and carbon dioxide levels a) The increased use of motor vehicles in the United States during these years caused a decrease in carbon dioxide in Earth’s atmosphere. b) The decreased use of motor vehicles in the United States during these years caused an increase in carbon dioxide in Earth’s atmosphere. c) The decreased use of motor vehicles in the United States during these years caused a decrease in carbon dioxide in Earth’s atmosphere. d) The increased use of motor vehicles in the United States during these years caused an increase in carbon dioxide in Earth’s atmosphere. 6) When birds migrate, they encounter many hazards. Many birds are unable to make it back north. Small birds tend to fly during the night and eat during the day. Weather can also delay them in their journey south or north.Based on the information given, which biotic factor that changes annually imost likely signals the birds to migrate? a) loss of offspring b) reduction of food sources c) increase in the number of predators d) number of female birds in the population 7) What do you think the primary trigger for the TN warbler migrating south to Central America is? a) abundant food sources b) cold temperatures c) increased habitat d) moderate precipitation 8) Based on the data, which change could possibly affect the warblers if a spring season brought daily temperatures higher than 70°F? a) The warblers will move toward the coast because the temperatures will be stable near the water. b) The warblers will move farther north because they require a cooler range of temperatures to survive. c) The warblers will remain in the same place because they will adapt to the changing temperatures. d) The warblers will decrease in number because there are few birds that can adapt to the higher temperatures. 9) In some parts of Hawaii, nonnative grasses have been planted for cattle feed, replacing some of the native plants. Which statement describes the most likely impact of the replacement of rain forest plants with nonnative plants? a) The biodiversity of these areas will decrease. b) Rain forest plants will outcompete nonnative grasses for resources. c) Less nitrogen will be absorbed from the atmosphere over these areas. d) Cattle will get fewer nutrients grazing on nonnative grasses than on rain forest plants. 10) People are trying to find ways to control the growth of kudzu. Which three methods would best reduce the spread of kudzu in Tennessee? a) Water the trees that kudzu grows on top of more often. b) Use chemicals that slow down the growth of kudzu. c) Add insects that feed only on kudzu to the ecosystem. d) Dig up the roots of kudzu plants. e) Use fertilizers on kudzu plants. 11) Which graph correctly shows how the number of gray wolf sightings would change if more rabbits were available beginning in 1993? a) b) c) 12) Which two effects will drilling many wells have on the existing hydrological cycle? a) Drilling many wells will lower the water table. b) Drilling many wells will speed up the water cycle. c) Drilling many wells will cause water to evaporate faster. d) Drilling many wells will prevent water from entering the ground. e) Drilling many wells will cause less water to flow into lakes and streams 13) To decrease air pollution, a city began limiting the number of air-polluting particles companies were able to release into the air. The companies were required to use control devices that catch air-polluting particles. The companies’ processes were also changed so that the lowest possible amounts of polluting particles were released. a) The number of companies in the city has decreased. b) The number of parks and green spaces in the city has increased. c) The number of families moving into the city has decreased. d) The number of automobiles and traffic jams has increased. 14) Recently, severe weather damaged forests in northern New Mexico. Treesin these forests are nesting sites for Mexican spotted owls. Damage to the forests caused populations of Mexican spotted owls to decline in the state. Which of these describes the most likely result of a decrease in the number of Mexican spotted owls in New Mexico forests?. a) Populations of primary consumers increased, because there was less predation by Mexican spotted owls. b) Populations of predators decreased, because there was less competition from Mexican spotted owls. c) Deciduous trees grew at faster rates, because fewer Mexican spotted owls were nesting in their branches. d) Certain herbaceous plants reproduced at a slower rate, because fewer Mexican spotted owls flew above them. 15) Coypu damage riverbanks, trample crops, and reduce the amount of food available to other native herbivores. Based on the information in the data table, which strategy for controlling the coypu population would have the least effect on the North American river otter? a) Place poison on plants along marshes that will affect only coypu. b) Introduce a new carnivore to the rivers and streams. c) Set traps for coypu made of cages and trapdoors along the rivers and streams. d) Increase the number of water plants in the habitat that coypu eat. 16) A species of moth inhabits the fur of three-toed sloths. These moths provide nutrients to algae growing on the sloth’s fur. The algae provides camouflage for the sloth. The sloth’s waste provides a secure and nutrient-rich place for the moths to lay their eggs. Populations of three-toed sloths are decreasing due to deforestation of their habitat. Which of these will most likely result if the three-toed sloth population continues to decline? a) The population of moths will thrive by inhabiting the fur of another tree-dwelling mammal. b) The algae will adapt to living on tree trunks and low-hanging branches. c) The population of moths will decline because of fewer places to lay eggs. d) The algae will survive by breeding with another photosynthetic organism 17) Which factor makes the ocean off the coast of Peru one of the best ecosystems for sustaining the largest fish populations in the world? a) A. the cold waters traveling up the coast of South America with large amounts of nutrients needed in the ecosystem b) B. the cold winds from the equator bringing nutrients from the western oceans needed in the ecosystem c) C. the warm waters from the western oceans that bring large amounts of nutrients needed in the ecosystem d) D. the warm winds that move the nutrients needed in the ecosystem to the coastal areas 18) Traditional farming practices can increase soil erosion. Eroded soils can affect nearby lakes by causing eutriphication. Eutriphication decreases the water quality of a lake by redicing the amount of oxygen in the water. Which statment describes the best solution for a farmer to increase the biodiversity of a nearby lake? a) A. The farmer removes more retaining walls that control runoff. b) B. The farmer increases the amount of time that cows graze on grasses each day. c) C. The farmer uses more fertilizer when growing new crops. d) D. The farmer plants a variety of trees along his fields. 19) A student researched the different sounds made by prairie dogs. Which question about the “jump-yip” research of prairie dog communication was the student trying to answer? a) Why do prairie dogs use the “jump-yip” behavior? b) What are prairie dogs celebrating when they use the “jump-yip” behavior? c) Why does this “jump-yip” behavior occur only at night? d) Does this “jump-yip” behavior scare the other prairie dogs?

Life Science Standards Review

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