Question;Question 1 of 303.33/ 3.33 PointsWhich organisms provide most of the nutrient supply on the ocean and are at the bottom of the ocean food web? A.Seaweeds B.Large fishes C.Zooplankton D.Phytoplankton E.Small fishesFeedback:Good job!Question 2 of 303.33/ 3.33 PointsWhich of the following statements describes zooplankton? A.small organisms which are found riding on animals B.all life in the oceanic ecosystem C.free-drifting or mobile algae that form the base of the aquatic food chain D.includes all the organisms that animals feed on E.organisms that feed on phytoplanktonFeedback:Good job!Question 3 of 303.33/ 3.33 PointsWhich ecosystem with fertile soil has been mainly converted into agricultural farmlands for human use? A.Temperate grasslands B.Taiga C.Tundra D.Tropical rain forest E.Desert Feedback:Good job!Question 4 of 303.33/ 3.33 PointsThe flat-topped acacia tree will be found in the ___________ ecosystem. A.Prairie grassland B.Savanna grassland C.Desert D.Taiga E.Tundra Feedback:Good job!Question 5 of 303.33/ 3.33 PointsWhat type of lake has nutrient-poor water, a small amount of organic matter, and low productivity? A.A mesopelagic lake B.A eutrophic lake C.An oligotrophic lake D.A bathypelagic lake E.An epipelagic lakeFeedback:Good job!Question 6 of 303.33/ 3.33 PointsWhich ecosystem contains the most different kinds of species and total amount of living matter? A.African savanna B.Tundra C.Taiga D. Tropical rain forest E.Temperate deciduous forestFeedback:Good job!Question 7 of 303.33/ 3.33 PointsOf all the aquatic communities, _________ act as the best nutrient trap. A. Rivers B.Sandy beaches C.Lakes D.Oceans E.EstuariesFeedback:Good job!Question 8 of 303.33/ 3.33 PointsWhat type of forest is found in a broad belt in Northern Eurasia and North America, with cone-bearing trees? A.Tropical rain forest B.Desert C.Temperate deciduous forest D.Taiga E.Tundra Feedback:Good job!Question 9 of 303.33/ 3.33 PointsWhich ecosystem are the Russian steppes, South American pampas and the North American prairies?? A.Tropical rain forests B.Temperate grasslands C.Temperate rain forests D.Temperate deserts E.Temperate deciduous forests Feedback:Good job!Question 10 of 303.33/ 3.33 PointsThe tendency for the windward side of a coastal mountain range to get more rain than the leeward side is known as: A.The altitude effect B.The mountain effect C.The topography effect D.The windward effect E.The rain shadow effectFeedback:Good job!Part 2 of 6 -26.64/ 33.3 PointsQuestion 11 of 300.0/ 3.33 PointsThe type of diversity which is dependent on the interactions of species at a particular location is known as: A.Ecosystem diversity B.Sustainable diversity C.Genetic diversity D.Landscape diversity E.Keystone diversity Feedback:Understand ecosystem diversityQuestion 12 of 300.0/ 3.33 PointsAgriculture could reduce its use of water by ______. A.planting drought and salt tolerant crops B.reducing the size of the crop being planted C.letting the natural precipitation water the crops D.only farming in areas with plenty of water E.all of the aboveFeedback:Please review Chapter 40.Question 13 of 303.33/ 3.33 PointsWhich of the following is a direct value of biodiversity? A.Wildlife helps dispose of wastes B.Natural areas provide freshwater C.Natural areas prevent soil erosion D.Natural areas regulate climate E.Wildlife provides agricultural resourcesFeedback:Goods job!Question 14 of 303.33/ 3.33 PointsPesticides used in agriculture reduce soil ______ because they kill beneficial soil organisms as well as pests. A.texture B.nutrients C.moisture D.fertility E.none of the aboveFeedback:Good job!Question 15 of 303.33/ 3.33 PointsWhich of the following is false about alien species? A.They can disrupt food webs B.They generally stay in their current location without human interference C.They can be transported accidentally D.They have very little effect on island ecosystems E.They can be transported intentionallyFeedback:Good job!Question 16 of 303.33/ 3.33 PointsIf you were studying a subdivision of conservation biology that seeks a scientific way to return ecosystems to their former state, you would be studying which of the following? A.Ecosystem ecology B.Landscape ecology C.Metapopulation ecology D.Restoration ecology E.Biodiversity ecologyFeedback:Good job!Question 17 of 303.33/ 3.33 PointsSpecies that influence the viability of a community, although their numbers may not be exceedingly high, are referred to as: A.Keystone species B.Alien species C.Pioneer species D.Nonnative species E.Introduced speciesFeedback:Good job!Question 18 of 303.33/ 3.33 PointsIf you were studying an ecosystem which has the greatest biodiversity you would be studying which of the following? A.Tropical rain forests B.Grasslands C.Tundra D.Taigas E.Temperate deciduous forestsFeedback:Good job!Question 19 of 303.33/ 3.33 PointsWhich of the following is primarily due to air pollution from sulfur dioxide and nitrogen oxides? A.Eutrophication B.Global warming C.Ozone depletion D.Organic chemical buildup E.Acid depositionFeedback:Good job!Question 20 of 303.33/ 3.33 PointsIf you were studying a species which has totally disappeared from the planet you would be studying: A.A threatened species B.An introduced species C.A keystone species D.An endangered species E.An extinct speciesFeedback:Good job!Part 3 of 6 -3.33/ 6.66 PointsQuestion 21 of 303.33/ 3.33 PointsTo calculate the Energy Conversion Efficiency for a trophic level you: A.Add the energy level of the higher trophic level to the energy levels of all the preceding trophic levels B.Calculate the ratio of the energy of the higher trophic level to the lower trophic level C.Divide the energy of the lower trophic level by the energy level of the higher trophic level D.Multiply the energy of the higher trophic level by the energy level of the lower trophic levelFeedback:Good job!Question 22 of 300.0/ 3.33 PointsIn the lab activity, which of the following statements is correct about the use of the online calculator tool? A.You cannot access the calculator tool unless you have first appropriately placed at last two organisms within their trophic levels. B.You can access and use the calculator at any time. C.You can only input the amounts pertaining to each individual ecosystem. D.You cannot access the calculator tool unless you have first appropriately placed all the organisms in their respective trophic levels.Feedback:Refer to the lab simulation for details.Part 4 of 6 -3.33/ 9.99 PointsQuestion 23 of 303.33/ 3.33 PointsWhich of the following characterize the biomass of marine and freshwater ecosystems? A.They have less primary producer biomass than at higher trophic levels. B.The algae and phytoplankton making up the primary producers have a short lifespan. C.The algae and phytoplankton which are the primary producers are rapidly harvested and removed. D.All of the aboveFeedback:Good job!Question 24 of 300.0/ 3.33 PointsBased on the lab activity, grass height usually is a good indicator of A.d. Soil contamination B.Available moisture C.Very little predators in the region D.Presence of large herbivoresFeedback:Refer to the Field Guide from your lab.Question 25 of 300.0/ 3.33 PointsSelect the correct statement about deciduous forests ecosystems in the lab activity A.Deciduous forests are characterized by evergreen trees such as various species of coniferous trees. B.Deciduous forests are characterized by abundant moisture C.Deciduous forests are characterized by warm summers and low moisture. D.Deciduous forests are characterized by arid a ground with little plants.Feedback:Refer to the Field Guide from the lab.Part 5 of 6 -9.99/ 9.99 PointsQuestion 26 of 303.33/ 3.33 PointsFreshwater ecosystems can be divided into separate zones. These are: A.Littoral zone B.Limnetic zone C.Profundal zone D.All of the aboveFeedback:Good job!Question 27 of 303.33/ 3.33 PointsIn which zone do the decomposers live in freshwater ecosystems? A.Littoral zone B.Limnetic zone C.Wetlands zone D.Profundal zoneFeedback:Good job!Question 28 of 303.33/ 3.33 PointsOpossums can be found in a deciduous forest ecosystem. Opossums eat _______ and therefore are second order heterotrophs. A.Insects B.Berries C.Frogs D.SnakesFeedback:Good job!Part 6 of 6 -6.66/ 6.66 PointsQuestion 29 of 303.33/ 3.33 PointsCompare and contrast the ecological activity taking place in the littoral, limnetic, and profundal zones.Question 30 of 303.33/ 3.33 PointsPredict what would happen to the ecology of a pond?s littoral zone if the surrounding trees are cut.
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