ENVIRONMENTAL SCIENCE MULTIPLE CHOICE LOWER SIX SCIENCE
Quiz by Jaime Birbal
Lower Secondary Form3
Science
Trinidad and Tobago Curriculum
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10 questions
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- Q1What is the name given to the transitional zone that separates different ecosystems?HabitatEcotoneNicheBorders300s
- Q2Item 2 refers to the diagram below which illustrates how the number of individuals in a population changed with time as a result of external stresses and resource limitations. Which lettered portion of the curve corresponds to the carrying capacity of the ecosystem?SRPQ300s
- Q3Competition is important in an ecosystem because itProvides food in the ecosystemPromotes natural selection of the fittest individuals in the populationDecreases population sizeMaintain the lowest carrying capacity of the ecosystem300s
- Q4A keystone species is one that isIntroduced into a new areaNative to a particular areaOver exploited and in danger of extinctionVital to the survival of other species300s
- Q5The area labeled X isMesosphereBiosphereTroposphereStratosphere300s
- Q6This item refers to the following results, which were obtained by students investigating the density and distribution of the three species of plants, A, B and C, in a grassy field using a 1m² quadrat. (use the table above). The mean density, in plants/m², of Species A in the field is3.63.33.02.6300s
- Q7Which of the following may occur if a keystone species disappears from an ecosystem?Only their typical predator will be affectedThere will be a decrease in the population of other speciesOnly their common prey will be affectedThere will be an increase in the population of other species300s
- Q8Toxic pesticides can re-enter the food chain viaground water contaminationsedimentation of water bodieserosiontransportation300s
- Q9Which of the following terms refers to the intensive search for compounds of medicinal value in organisms that were not previously used for such purposes?BioproductionBioprospectingBiopersistenceBiopiracy300s
- Q10Which of the following are threatened by the breakdown of calcium carbonate from water containing higher levels of dilute carbonic acid?MangrovesWetlandsCoral ReefsSeagrass Beds300s
