- 1. An organisms that breaks down dead and decaying matter
A) herbivore
B) omnivore
C) predator
D) decomposer
- 2. An animal that eats only plants for food
A) herbivore
B) omnivore
C) vegivore
D) carnivore
- 3. An animal that eats both plants and animals
A) omnivore
B) decomposer
C) hungry
D) carnivore
- 4. An organism that eats only meat for food
A) producer
B) herbivore
C) omnivore
D) carnivore
- 5. Many food chains that are linked together are called a ________________.
A) food string
B) food link
C) food web
D) food circles
- 6. Which of the following is a producer?
A) plant
B) fish
C) spider
D) cricket
- 7. An example of an omnivore would be a ___________________.
A) praying mantis
B) bear
C) cat
D) wolf
- 8. The animal that is hunted by its predator
A) prey
B) producer
C) consumer
D) predator
- 9. An example of an herbivore would be a ______________.
A) spider
B) rabbit
C) worm
D) lion
- 10. An example of a decomposer would be a ____________________.
A) a tree
B) worm
C) a bird
D) a person
- 11. The living parts in an ecosystem are called
A) fossils
B) ecology
C) biotic factors
D) abiotic factors
- 12. The direction an arrow faces in a food chain points to who is ___________________.
A) eats meat
B) doing the eating
C) eats plants
D) getting eaten
- 13. The nonliving parts in an ecosystem are called
A) producers
B) ecology
C) abiotic factors
D) biotic factors
- 14. Carnivore that hunts for its food
A) producer
B) predator
C) consumer
D) prey
- 15. Organisms that make their own food for energy are called
A) carnivores
B) herbivores
C) consumers
D) producers
- 16. Organisms that cannot make their own food and get energy from other organisms are called
A) vegivores
B) plants
C) producers
D) consumers
- 17. The straight path in which energy is passed from the sun, to producer, to consumers is called a
A) food web
B) food highway
C) food line
D) food chain
- 18. The living and nonliving factors in an environment and all their interactions
A) ecosystem
B) food web
C) community
D) ecology
- 19. An important abiotic factor that means the typical weather pattern in an environment
A) temperature
B) weather
C) heat
D) climate
- 20. All the members of a species that live in an ecosystem
A) population
B) species
C) kingdom
D) community
- 21. All of the populations in an ecosystem
A) population
B) habitat
C) community
D) kingdom
- 22. The home of an organism within an ecosystem
A) pond
B) house
C) habitat
D) community
- 23. Which type of organisms are best able to recycle nutrients back into the ecosystem?
A) scavengers
B) producers
C) predators
D) decomposers
- 24. Producers are found at the bottom of the pyramid because producers
A) depend on consumers
B) provide energy for consumers
C) have less mass than consumers
D) have fewer species than consumers
- 25. Which statement describes the role of bacteria and fungi?
A) The decompose organic matter in the soil
B) They hold soil in place during high winds
C) They grow within cracks of rocks, breaking the rock into small pieces
D) They increase water access and flow and help aerate the soil
- 26. The following is which type of symbiosis: Bees use flower nectar for food, and they carry flower pollen to other flowers, allowing the flower to reproduce
A) parasitism
B) commensalism
C) mutualism
- 27. Tapeworms live in the intestines of cats and absorb nutrients from the food the cats eat. the cats do not get enough nutrients. What type of symbiosis does this represent?
A) mutualism
B) Parasitism
C) commensalism
- 28. Orchids grow in tree branches. They receive light, and their roots get the water they need to grow. The tree is not affected. What type of symbiosis does this represent?
A) mutualism
B) parasitism
C) commensalism
- 29. What would happen if the frogs were suddenly removed from this food chain? clover-grasshopper-frog-snake-owl
A) The clover population would be unaffected
B) The snake population would begin feeding on grasshoppers
C) The owl population would increase
D) The grasshopper population would increase
- 30. How do producers get energy?
A) eating plants and seeds
B) breaking down organisms through decay
C) using the sun to make food
D) eating other animals
- 31. A disease causing a fungus to grow and feed on an elm tree, destroys the tree. What type of symbiosis does this represent?
A) parasitism
B) commensalism
C) mutualism
- 32. Clownfish live among the venomous tentacles of a sea anemone. They are protected from predators, and they keep the sea anemone clean. What type of symbiosis is does this represent?
A) parasitism
B) commensalism
C) mutualism
- 33. In one area, a large source of prey for eagles is rabbits. If the number of rabbits suddenly decreases, what effect will it most likely have on the eagles?
A) They will adapt new behaviors
B) Their numbers will decrease
C) Their numbers will increase
- 34. Which of the following is a first level, or primary consumer?
A) fox
B) coyote
C) squirrel
D) acorn tree
- 35. Which organisms make energy available to all other organisms in a food chain?
A) consumers
B) decomposers
C) producers
D) scavengers
- 36. Populations, community, biosphere, organism, and ecosystem are all terms that are related to the environment. Choose the set that has the terms arranged in order from simplest to most complex
A) organism, population, community, biosphere, ecosystem
B) organism, population, community, ecosystem, biosphere
C) organism, community, population, ecosystem, biosphere
D) biosphere, ecosystem, community, population, organism
- 37. Which of the following correctly describes the transfer of energy in an ecosystem
A) Energy is transferred from the sun to decomposers
B) Energy is transferred from producers to consumers
C) Energy is transferred from consumers to producers
D) Energy is transferred from producers to the sun
- 38. A tick sucks blood from a dog. In this relationship, the tick is the _____________ and the dog is the _____________
A) parasite, prey
B) parasite, host
C) predator, host
D) host, parasite
- 39. Nature's recyclers are
A) decomposers
B) producers
C) predators
D) omnivores
- 40. Which of the following is the correct classification of the organisms in the food web
A) zebra-consumer;hyena-consumer;beetle-consumer
B) zebra-consumer; hyena-consumer; beetle-decomposer
C) zebra-producer;hyena-producer; beetle-decomposer
D) zebra-producer; hyena - producer; beetle-consumer
- 41. a resource that controls the size of a population or the size of an organism
A) community
B) population
C) population density
D) limiting factor
- 42. A hunter sees one lone raccoon. This is an example of a(n)
A) population
B) biosphere
C) organism
D) community
- 43. A factor that may increase the population size of the kaibab deer in the Kaibab Plateau is
A) extermination of predators
B) hunting of deer
C) reducing food source by the grazing of livestock
- 44. The largest population that an environment can support at any given time is known as the
A) carrying capacity
B) community
C) food web
D) limiting factor
- 45. What would be a factor that could increase a populaion of organisms that would create a population that may be larger than the carrying capacity for a little while?
A) a rainy season
B) a vacation
C) lunch at McDonalds
D) an eclipse
- 46. When two or more individuals try to use the same resource, such as food, it is called
A) a race
B) competition
C) a problem
D) a food web
- 47. Which of the following is an example of a resource that organisms would compete for in an ecosystem?
A) food
B) water
C) shelter
D) all of these items
- 48. Competition can take place between organisms AND populations
A) True
B) False
- 49. In an energy web, how much energy is lost in each level?
A) 15%
B) 10%
C) 1000%
D) 100%
- 50. In an energy pyramid, more energy is available at the base of the pyramid than at its top.
A) False
B) True
- 51. What is the original source of energy in a food chain?
A) producer
B) soil
C) consumer
D) sun
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