Presentation on theme: “Which phrase best describes the focus of ecology?”— Presentation transcript:
1 Which phrase best describes the focus of ecology?Individual organisms Individual cells Interactions among organisms Interactions among cells
2 What is the term for a group of different species in a given area?Population Ecosystem Community Biome
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3 Which level of organization in ecology is a major regional or global community of organisms?An ecosystem Population Community Biome
4 Studying a virtual ecosystem on a computer is an example ofExperimentation Modeling Surveying Observation
5 Which of the following is the best example of an observation study?A quadrant sample A laboratory experiment A computer program A population model
6 Which of the following is an example of a biotic factor in an ecosystem?Sunlight Stream Tree Rock
7 Wind is considered to be an abiotic factor because itIs not related to biodiversity Is a nonliving thing Is in equilibrium Is not in any ecosystem
8 A rainforest has a high level of biodiversity because it hasMany abiotic factors Some endangered species Few connections between living things A wide variety of living things
9 A keystone species is a species thatGoes unnoticed if its numbers decrease Alters an area by building bridges and dams Leads to a decrease in an area’s biodiversity Has an unusually large impact on its ecosystem.
10 Beavers are sometimes trapped for their furBeavers are sometimes trapped for their fur. What could be one effect of increased trapping of beavers in an area? Biodiversity among the area’s fish would increase The number of herons and kingfishers would decrease There would be more nesting areas for waterfowl More trees would be cut down
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11 An organism that makes its own food is called aConsumer Producer Heterotroph Chloroplast
12 A moose is considered to be a consumer because itGets energy by eating other resources Makes its own food Forms carbohydrates using chemicals Uses sunlight for energy
13 The basis for the energy in an ecosystem is provided byConsumers Heterotrophs Chemosynthesis Producers
14 Most producers get energy from the sun using the process ofRespiration Consumption Photosynthesis Chemosynthesis
15 Chemosynthesis is the process in which organismsForm carbohydrates using chemicals Get energy by eating other organisms Make chemicals that absorb sunlight Use energy from the sun to form carbohydrates
16 A model that shows a single sequence of feeding relationships is called aTrophic level Food chain Food web Feeding chain
17 Decomposers are important to ecosystems because theyReturn vital nutrients to the environment Are producers Capture energy from the Sun Can be omnivores
18 Giant pandas eat bamboo almost exclusivelyGiant pandas eat bamboo almost exclusively. For this reason giant pandas are an example of a(n) carnivore Omnivore Generalist Specialist
19 A food chain contains oak trees (producer), mice (herbivore), black snakes (carnivore), and bald eagle (carnivore). How many trophic levels does this food chain have? One Two Three Four
20 Food webs are models that showOne sequence of producer and consumer Network of feeding relationships Stored energy in food chains Only primary consumers in an ecosystem
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21 The water cycle, in which water moves from the atmosphere, to the surface, below ground and back is called Biogeochemical cycle Oxygen cycle Hydrologic cycle Nitrogen cycle
22 Which two biogeochemical cycles depend directly on photosynthesis?Hydrologic cycle and oxygen cycle Carbon cycle and phosphorous cycle Nitrogen cycle and phosphorous cycle Oxygen cycle and carbon cycle
23 Fossil fuels are part of which of the following cycles?Oxygen Carbon Nitrogen Phosphorous
24 What happens during the process of nitrogen fixation?Bacteria changes ammonium into nitrate Bacteria grows on nodules on plant roots Bacteria absorb ammonia and excrete ammonium Bacteria convert gaseous nitrogen into ammonia
25 Where does most of the phosphorous cycle take place?In the atmosphere At and below ground level On fungi near plant roots Close to rocky terrain
26 Each level in a food chain contains less energy than the one below it because some energy isAdded to the system Lost as heat Consumed by carnivores Incorporated into biomass
27 The term biomass refers to the totalDry mass of the organisms in a given area Unused material excreted as waste Producer-to-consumer ratio Mass of all living things on Earth
28 A diagram that shows how available energy is distributed among trophic levels in an ecosystem is called a(n) Food pyramid Pyramid of numbers Food web Energy pyramid
29 A biomass pyramid is a diagram that compares theMasses of different organisms Number of different organisms Biomass of different trophic levels Distribution of energy in trophic levels
30 A diagram that shows the numbers of individual organisms at each trophic level in an ecosystem is called a(n) Biomass pyramid Pyramid of numbers Energy pyramid Inverted pyramid
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Category: WHICH
