1) Which of the following describes the mammals, fish, birds, and plants that live in an environment? a) Abiotic c) biome b) population d) biotic
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1 CH.16 practice TEST -6th grade Multiple Choice Identify the choice that best completes the statement or answers the question. 1) Which of the following describes the mammals, fish, birds, and plants that live in an environment? a) Abiotic c) biome b) population d) biotic 2) An area where the climate determines the kinds of plants and animals that live there is called a(n) a) biome. c) community. b) biosphere. d) ecosystem. 3) The six levels of environmental organization are biosphere, biome, ecosystem, community, population, and a) ecology. c) individual. b) species. d) climate. 4) Which of the following is abiotic? a) an egret c) grass b) an alligator d) water 5) Organisms that can make their own food from sunlight are called a) decomposers. c) producers. b) consumers. d) carnivores. 6) Grass is eaten by a prairie dog. The prairie dog is eaten by a coyote. This is an example of a) an abiotic element. c) a herbivore. b) an omnivore. d) a food chain. 7) One food web arrow goes from a prairie dog to a coyote, showing that a) the coyote is bigger. c) the prairie dog eats the coyote. b) the coyote eats the prairie dog. d) the prairie dog is a producer. 8) The decrease in the wolf population in Yellowstone National Park is an example of a) how an energy pyramid works. b) how abiotic factors affect animal populations. c) how the availability of living resources affects all organisms. d) how a food chain works.
2 9) The largest population an environment can support is its a) carrying capacity. c) population. b) limiting factor. d) symbiosis. 10) One type of competition involves individuals competing for resources. The other involves competition between different a) schools. c) environments. b) populations. d) relationships. 11) Blending in with the background is called a) symbiosis. c) camouflage. b) carrying capacity. d) limiting factor. 12) A bird eats a worm. Which of the following is the predator? a) the worm c) both the bird and the worm b) the bird d) neither the bird nor the worm 13) Rocks, temperature, and water are what part of the environment? a) biotic c) population b) abiotic d) living 14) What level of organization is one organism? a) biosphere c) individual b) biome d) community 15) What happens when different kinds of trees need the same space? a) symbiosis c) commensalism b) competition d) parasitism 16) What organisms make food from sunlight? a) consumers c) decomposers b) parasites d) producers 17) What happened to the elk population when the wolves were brought back to Yellowstone? a) It got larger. c) It got larger, then smaller. b) It got smaller. d) It stayed the same.
3 18) When is food a limiting factor? a) when a population is large c) when a population is small b) when there s too much food d) when there s too much water 19) When a bird eats a worm, what is the bird? a) prey c) producer b) predator d) herbivore 20) In which relationship do living things help each other? a) parasitism c) organism b) mutualism d) predator 21) Which of the following is a relationship where one organism benefits and the other is not affected? a) a community c) commensalism b) a predator d) mutualism 22) Rocks, temperature, and water are what part of the environment? a) biotic c) abiotic b) community d) population 23) What do several different populations living together make? a) a biosphere c) a community b) an organism d) an ecosystem 24) An organism that kills and eats another organism is a(n) a) prey. c) population. b) predator. d) herbivore. 25) Grass that changes energy from the sun into chemical energy is an example of a(n) a) consumer. c) decomposer. b) parasite. d) producer. 26) A diagram that shows how energy is transferred from grass to a rabbit and then from a rabbit to a fox is a) an energy pyramid. c) a food chain. b) a food web. d) a population chart. 27) In a food web, arrows point in just one direction because they show
4 a) which animal is bigger. b) which animals are related. c) how energy flows to the animal that is eating. d) how energy flows to the animal that is eaten. 28) In Yellowstone, which of the following were affected by the loss of the gray wolves? a) some of the species c) only the elk population b) all the species d) only the herbivore populations 29) Limiting factors determine an area s carrying capacity because a) the number of animals is limited. c) animals need resources to survive. b) ecosystems are small. d) the number of animals is unlimited. 30) Two members of the same species fight over who gets a certain food. This is an example of a) community. c) mutualism. b) competition. d) commensalism. 31) In which type of symbiosis do organisms help each other? a) parasitism c) community b) mutualism d) commensalisms 32) What is an area in which the climate determines the plant community? a) biosphere c) community b) biome d) population 33) If scientists are studying the egrets, herons, marsh crabs, and cordgrass, but not the water or rocks in a salt marsh, what level of organization would they be studying? a) individual c) community b) population d) ecosystem 34) What is a community of organisms and their abiotic environment? a) individual c) community b) population d) ecosystem Use the art to answer the following questions.
5 35) Three organisms on the food web have arrows pointing away from them and no arrows pointing toward them. They are a) omnivores. c) decomposers. b) herbivores. d) producers. 36) Four organisms on the food web have arrows pointing toward them but no arrows pointing away from them. This is because a) they make their own food. c) nothing shown eats them. b) they give energy to others. d) they need no energy. 37) The arrows on the food web show that a) prairie dogs eat grass. c) squirrels eat grass. b) deer eat prairie dogs. d) squirrels eat coyotes. 38) What does the arrow between the grasshopper and the coyote represent? a) energy flowing from producers to consumers b) energy flowing from consumers to producers c) energy flowing from the coyote to the grasshopper d) energy flowing from the grasshopper to the coyote
6 39) The plants a ladybug lives on, the aphids the ladybug eats, and the birds that would eat the ladybug are all a) biotic elements of an ecosystem. b) organisms that belong to the same species. c) organisms that change sunlight into energy. d) abiotic elements of an ecosystem. 40) Herbivores, carnivores, and omnivores are all a) decomposers. c) predators b) producers. d) consumers. 41) Which of the following shows an ecosystem s loss of energy? a) food web c) energy pyramid b) symbiosis d) food chain 42) Which of the following is an abiotic factor of the environment? a) bear c) water b) cordgrass d) fish 43) What is it called when the elk in Yellowstone try to eat the same food plants? a) competition c) mutualism b) parasitism d) commensalism 44) Coyotes prey on prairie dogs. In order for the prairie dog population to survive, how many prairie dogs are needed compared to coyotes? a) Fewer prairie dogs than coyotes are needed. b) Many more prairie dogs than coyotes are needed. c) About the same number of prairie dogs as coyotes are needed. d) There is no relationship between the number of prairie dogs and coyotes. 45) What kind of elk do wolves kill? a) the strong and healthy c) the old, injured, and diseased b) the smart and quick d) the energetic and fast 46) When there is a lot of pollution, rain can be acidic, harming plants and animals. What is this an example of? a) competition between a population and a community b) a mutualistic type of symbiosis c) an abiotic factor affecting an ecosystem d) an individual affecting a community
7 47) It has been a very harsh winter. The ground is covered in snow, and the trees are covered in ice. Many deer die because they cannot find food. This is an example of a) producers providing food. b) a limiting factor controlling a population. c) a biosphere in trouble. d) predators harvesting the weak and the sick. 48) If you made a chart showing all of the organisms living in the local lake, with arrows drawn between the various organisms showing who ate what, what kind of chart would you have made? a) energy pyramid c) food web b) food chain d) ecosystem chart 49) Two lionesses are fighting over a fresh kill. What type of competition is this? a) competition between predator and prey b) competition within a population c) competition between species in a community d) competition between parasite and host 50) Suppose a bird sits on a horse s back and eats the insects that bite the horse. What is this an example of? a) mutualism c) competition b) parasitism d) commensalism
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