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Food chain: Quiz

  
  

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Question 1: [3] When autotrophs are eaten by heterotrophs, i.e., consumers, such as animals the ________, fats, and proteins contained in them become energy sources for the heterotrophs.
CarbohydrateGlucoseFructoseSucrose

Question 2: ________ flows from one organism to the next and to the next and so on, with some energy being lost at each level.
Food energyNutritionFood microbiologyFood chemistry

Question 3: There is usually a maximum of four or five links in a food chain, although food chains in ________ are frequently longer than those on land.
Aquatic ecosystemLotic ecosystemLentic ecosystemBenthos

Question 4: [2] Proteins can be made using ________, sulfates, and phosphates in the soil.
NitrogenIronNitrateAmmonia

Question 5: After Charles Elton's use of food webs in his 1927 synthesis[25], they became a central concept in the field of ________.
BiologyEcosystemBotanyEcology

Question 6: Dead organisms are consumed by detritivores, scavengers, and decomposers, including ________ and insects, thus retuning nutrients to the soil.
PlantFungusBasidiomycotaAscomycota

Question 7: Carbon dioxide is recycled in the ________ as carbohydrates, fats, and proteins are oxidized (burned) to produce carbon dioxide and water.
Greenhouse gasCarbon cycleCarbon sinkOcean acidification

Question 8: The earliest description of a food chain was given by the medieval Afro-Arab biologist ________ (781-868).
Early Islamic philosophyAlhazenAl-KindiAl-Jahiz

Question 9: In a pyramid of numbers, the number of consumers at each level decreases significantly, so that a single top consumer, (e.g., a ________ or a human), will be supported by a million separate producers.
Sea otterBrown BearPolar bearWalrus

Question 10: An important exception is lithotrophy, the utilization of inorganic compounds, especially minerals such as sulfur or ________, for energy.
ZincOxygenIronChromium
















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