1) What type of relationship do the clown fish(+) and the sea anemone(+) have? a) parasitism b) mutualism c) commensalism d) predator/prey 2) What does an autotroph (producer) use for energy? a) living organisms b) water c) dead organisms d) sunlight 3) All green plants can be classified as... a) producers b) consumers c) decomposers d) original source of energy 4) If humans started poisoning the shrews, which two other organisms would be negatively impacted? a) hawk and cricket b) frog and snake c) cricket and grasshopper d) hawk and snake 5) In an energy pyramid, what percentage of the energy is passed to the next level? a) 100% b) 90% c) 50% d) 10% 6) Energy flows from the Sun to the Earth. What direction does energy flow in an energy pyramid? a) top to bottom b) side to side c) right to left d) bottom to top 7) What type of symbiotic relationship do the humpback whale(0) and the barnacle(+) have? a) parasitism b) commensalism c) mutualism d) predator/prey 8) What is the relationship between the rabbit and the bobcat? a) mutualism b) predatory c) commensalism d) parasitism 9) The bobcat population suddenly declines due to hunting; What happens to the rabbit population? a) declines suddenly b) increases suddenly c) declines slowly d) increases slowly 10) What makes a species invasive? a) it has crossed a national border between countries b) it has many natural predators c) it is brought in by natural forces d) It does damage to the ecosystem 11) A parasite requires a ____________________ for survival. a) host b) friend c) predator d) frenemy 12) Interpret this graph a) When rabbit populations staid the same, foxes increased b) When rabbit populations decreased, fox populations increased c) When rabbit populations stayed the same, foxes decreased d) When rabbit populations increased, fox populations increased 13) Which of the following statements about introduced species is TRUE? a) Most were accidentally brought by boats b) They are more likely to cause problems in rural areas than in urban areas c) they are unlikely to cause any problems d) their impact on the local ecosystem can be difficult to predict. 14) Disruptions in ecosystems: a) can lead to changes, but they are not long term b) can lead to increased stability in the ecosystem c) can be caused by biotic and abiotic factors d) are always caused by humans 15) A new species of Grey Wolf has been introduced to Yosemite National Park. Their main meal consists of deer that already live in the park. What is most likely to happen to the population of Grey Wolves? a) it will increase b) it will decrease c) it will stay the same d) it will decrease a lot and then increase 16) Which of the following is an example of mutualism? a) a mosquito feeding on the blood of a bison b) a sunflower being pollinated by a bee c) a mushroom growing in a decomposing log d) a frog and a bird eating the same kind of bug 17) The main reason the Nile perch survived and overpopulated an area is that: a) They had no natural predators b) there is not enough food for both the perch and the cichlids c) Perch are the only species able to survive in new habitats d) people fed them too much 18) An example of commensalism is: a) The egret is a heron that moves along with cattle or horses. It can be seen on the back of the animal. The birds feed on insects hiding in vegetation, which get stirred when the animals feed. b) Lice living on the human head. They cannot survive without a human host. c) Clownfish and anemones live together protecting each other from predators d) Bears feed on berries, a rabbit feeds on lettuce, and a grasshopper feeds on leaves 19) If the rodent population in an area decreases, what would most likely happen to the owl population in the same area? a) It would increase b) It would decrease c) It would stay the same d) There is no impact 20) Which of the following would be considered an abiotic factor? a) temperature b) grass c) leaves d) mouse

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