Ecosystems Unit Test
Quiz by Deborah Roll
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19 questions
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- Q1An person who works with aquariums takes half of the fish out of the tank and the remaining fish grow larger and are healthier. Which factor was MOST LIKELY affecting the fish?shelterwaterfoodSpace45s
- Q2Which is an ABIOTIC factor that would affect the growth of a population within an ecosystem?availability of producersthe availability of waterthe number of carnivoresthe types of herbivores that are present45s
- Q3If the primary food source for the whale population in an area is depleted, which will most likely happen?The whale population will stabilize (stay the same)Competition among the whales will increase.Starvation will cause the whales to become extinctThe whale population will increase45s
- Q4A farmer clears an acre of trees on his property. Which best describes the effect this will have on a population of bats that roost inside old hollow trees that are on the property?The population will increase due to the availability of young trees that will begin to grow.The population will increase due to more open space.The population will decrease due to a lack of food source.The population will decrease due to lack of suitable trees in which to have offspring and shelter.45s
- Q5Which best describes mutualism?both species are harmedBoth species benefitOne species benefits and the other is NOT harmed.One species benefits at the expense of the other species. (the other species is harmed)45s
- Q6What type of relationship exists between wolves who hunt together for food?CooperationParasitismMutualism45s
- Q7Tapeworms live in the intestines of dogs and absorb nutrients from food the dog eats. Which best describes the outcome of this relationship?The tapeworm and the dog help each other survive.The tapeworm helps the dog survive.The dog becomes ill, and the tapeworm benefits.The dog and the tapeworm both become sick.45s
- Q8Which best describes the relationship between decomposers and producers?Produces absorb nutrients from decomposed material in the soilDecomposers provide producers with water.Producers release energy from the sun through decomposers.Decomposers absorb nutrients producers put in the soil.45s
- Q9In the Arctic, polar bears hunt seals as a source of food. Which best describes the relationship between the bears and seals?The polar bears are producers; the seals are consumers.The polar bears are consumer; the seals are producers.The polar bears are prey; the seals are predators.The polar bears are predators; the seals are prey.45s
- Q10A certain snake species in an ecosystem eats small rodents. If a bird species is introduced into the ecosystem that also eats small rodents, which of these will most likely increase?CompetitionMigrationMutualismParasitism45s
- Q11In a marine ecosystem, which gas is needed by algae to produce oxygen? Hint: what trophic level is algae.......Carbon dioxideChlorineHydrogenNitrogen45s
- Q12Which organisms contribute most to the decomposition of dead organisms?InsectsSnakesBacteriaViruses45s
- Q13Which best describes the role plants serve in the oxygen cycle?Plants release oxygen as a waste product in cellular respiration.Plants absorb oxygen during decomposition reactions.Plants absorb oxygen during photosynthesisPlants release oxygen as a waste product of photosynthesis.45s
- Q14Through which of these do animals release the most nitrogen from their bodies?UrineSaliva (spit)SweatBlood45s
- Q15Through which activity do animals get the carbon that is needed for their bodies?breathingrunningeatingsleeping45s