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Unit 1: MSLNG1 Stability and Change in an Ecosystem Pre-Test
Quiz by Carly Swain
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23 questions
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- Q11. What is the role of mountain lions in this ecosystem?d. carnivoreb. omnivorec. producera. herbivore30s
- Q22. What group of organisms are missing from this food web?d. herbivoresa. producersb. decomposersc. carnivores30s
- Q33. Hunting has just started to be allowed in the ecosystem above, and humans are killing many of the deer. A reduction in the deer population will affect the amount of energy this ecosystem is able to provide for which of the following organisms?a. rabbitd. hawkb. mountain lionc. mouse30s
- Q44. Which of the following could possibly increase the total amount of energy the sparrow population receives within the food chain?a. an increase in the number of cricketsd. a decrease in the number of hawksb. an increase in the number of rabbitsc. a decrease in trees and grasses30s
- Q55. If additional sparrows were introduced into this ecosystem, there would most likely be an immediate decrease in thea. cricket populationb. hawk populationd. spider populationc. frog population30s
- Q66. Which organisms in the food web are competing for the same resource?d. hawks and sparrowsc. spiders, sparrows, and frogsb. mountain lions, snakes and hawksa. rabbits, crickets and spiders30s
- Q77. Which organism labeled in this food web provides energy, either directly or indirectly, to all of the other organisms?c. small plantsd. coda. elephant sealsb. small animals30s
- Q88. What do the arrows in the diagram represent?b. life cycle stagesa. flow of energyd. renewable resource depletionc. one community replacing another30s
- Q99. Which of the following correctly shows one path that energy would flow through this ecosystem?b. small plants 🡪 cod 🡪 krill 🡪 small animalsa. killer whales 🡪 penguins 🡪 krill 🡪 small plantsc. small animals 🡪 small plants 🡪 krill 🡪 penguinsd. small plants 🡪 krill 🡪 squid 🡪 elephant seal30s
- Q1010. Four levels of an energy pyramid are represented. Which statement about this energy pyramid is correct?c. Organisms from level 2 receive their energy from level 3.b. Organisms in level 2 are carnivores.d. Organisms in level 1 receive their energy directly from the sun.a. Organisms in level 4 receive their energy directly from the sun.30s
- Q1111. Which level has the most energy available to it?c. 3a. 1d. 4b. 230s
- Q1212. Why are there usually just a few organisms at the top of an energy pyramid?b. So much energy is lost from one level to the next that the energy available can only support a few.a. Organisms at the top are larger and require more living space.d. Decomposers have a bigger impact on the highest energy level.c. Humans hunt organisms at this level.30s
- Q1313. Lightning from a thunderstorm strikes a tree that falls to the forest floor and dies. During the next few years the dead tree undergoes many changes. What organisms are most likely responsible for the breakdown of the tree?b. plantsa. animalsc. fungi and bacteriad. scavengers30s
- Q1414. Which graph shows what most likely would happen to the population of a certain animal if a new predator were introduced at time “A”?(3)(2)(1)(4)30s
- Q1515. A rabbit population has increased noticeably in the past ten years. Which of the following is a reasonable hypothesis for this population growth?c. Abnormal weather conditions have decreased water levels of the local ponds.a. Competition for food has increased among rabbits.b. The rabbit’s main predator has been eliminated by human development.d. An organism that relies on similar food sources has migrated into the area.30s