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- 1. Multiple Choice
A team of ecologists observed feeding patterns of several populations in the desert. The energy pyramid shown below depicts the feeding patterns the ecologist observed. Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?There is less energy available in the producers because their tissues are less dense than those at higher trophic levels.There is more energy available in the second trophic level because less energy is needed for hunting compared to the higher trophic levels.There is more available energy in the birds of prey because they have greater muscle mass for storing energy than organisms in lower trophic levels have.There is less available energy in the fourth trophic level because of the loss of energy through metabolism in each of the lower trophic levels. - 2. Multiple ChoiceA diagram of a food web is shown below.Which organism receives the least amount of energy from the producers?HawkRabbitGrasshopperMouse
- 3. Multiple ChoiceThe diagram shows the cycling of nutrients in an ecosystem. The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?ProducersConsumersDecomposersInorganic nutrients
- 4. Multiple ChoiceComplete burning of plant material returns carbon primarily to theherbivoreswatervegetationatmosphere
- 5. Multiple ChoiceWhich of these organisms would most likely be found at the top of an energy pyramid?clams - a primary consumersardines - a primary consumersharks - a secondary consumerkelp - a primary producer
- 6. Multiple ChoiceThe diagram shows the flow of carbon in a terrestrial ecosystem. Which will most likely happen if the decomposers are removed from the carbon cycle?The amount of carbon dioxide in the atmosphere will increase.The amount of carbon dioxide in the atmosphere will decrease.The amount of carbon dioxide used by producers will increase.The amount of carbon dioxide needed by consumers will decrease.
- 7. Multiple ChoiceIn a process called transpiration, plants get rid of excess water through pores in the leaves called stomata. This excess water is then released into the atmosphere as part of the water cycle. Which of the following terms best describes how the released water enters the atmosphere?condensationprecipitationevaporationcapillary action
- 8. Multiple ChoiceThe framework of organic molecules essential to all organisms is composed mainly of carbon atoms. Which processes are involved in the cycling of carbon within an environment?photosynthesis and respirationevaporation and condensationtranscription and translationdiffusion and transpiration
- 9. Multiple ChoiceWhich of the following statements is true about natural systems?Consumers form the bottom levels of both the energy pyramid and the biomass pyramid.Producers are at the bottom level of both the energy pyramid and the biomass pyramid.Producers are at the bottom of the energy pyramid, but at the top of the biomass pyramid.Producers are at the bottom of the energy pyramid, but at the top of the biomass pyramid.
- 10. Multiple ChoiceJill made the table below during her research on aquatic zones and living organisms. Based on Jill’s observations, which conclusion could you draw?Organisms in the intertidal zone must be able to withstand very cold water.There are no producers in the benthic zone that rely on photosynthesisThere are no producers in the benthic zone that rely on photosynthesisThe warm water and abundant sunlight in the nertic zone limits the plankton population.
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