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Ch. 7 Test Wed. 12-11
Contribué par: Welser
  • 1. The fennec, arctic, and gray foxes have different appearances because
A) they have adapted to different environments.
B) they belong to different kingdoms.
C) their appearances change from season to season.
D) they are hybrids of two different species.
  • 2. Which statement about adaptations is true?
A) Adaptations develop during the lifetime of an individual.
B) Adaptations occur when one individual develops better survival characteristics.
C) Adaptations include body structures but not behaviors.
D) Adaptations occur when survival characteristics are passed from one generation to another.
  • 3. What happens to a species that cannot adapt to changing conditions in its environment?
A) The species may become extinct.
B) The individual organisms move to other environments.
C) The individual organisms die.
D) The species moves to another environment.
  • 4. Which type of organisms get energy by breaking down the remains of dead organisms?
A) producers
B) consumers
C) decomposers
  • 5. How is a food chain related to a food web?
A) Food webs run parallel to food chains.
B) Food chains make up food webs.
C) They are not related.
D) Food webs make up food chains.
  • 6. An organism that harms another in a symbiotic relationship is a
A) parasite.
B) prey.
C) predator.
D) polluter.
  • 7. Why does the amount of available energy decrease at higher levels of the energy pyramid?
A) The upper-level organisms don’t need as much energy.
B) There are more upper-level organisms than lower-level organisms.
C) Some energy is used by organisms at each level for their own life processes.
D) Other substances move up the pyramid and take away some of the energy.
  • 8. When different species with similar needs live in an ecosystem with limited resources, what will happen?
A) They will live together peacefully. Some organisms will become prey and eat other organisms.
B) They will compete for available resources.
C) One species will adapt so that they will have different needs.
D) Some organisms will become prey and eat other organisms.
  • 9. Barnacles live on the side of a whale. The barnacles benefit but do not help or harm the whale. What kind of relationship is this?
A) symbolism
B) commensalism
C) mutualism
D) parasitism
  • 10. Which of the following would be the MOST useful adaptation for prey?
A) a keen sense of smell
B) a poisonous bite that can paralyze another organism
C) the ability to look like a stick or rock
D) strong jaws and sharp teeth
  • 11. As bees collect nectar from flowers, they spread pollen from one flower to another. Both species benefit. Which type of relationship is this?
A) succession
B) mutualism
C) commensalism
D) parasitism
  • 12. In the nitrogen cycle, where do animals get their nitrogen?
A) from the Sun
B) from plants
C) from decomposers
D) from the air
  • 13. Which best describes why competition occurs among animals in an ecosystem if resources are scarce?
A) Animals in an area have different needs.
B) Animals in an area have similar needs.
C) Different species of animals live in the same area.
D) Animals of similar species live in the same area.
  • 14. What purpose does the dormouse’s hibernation serve?
A) Allows it to escape from predators during the summer.
B) Allows it to take a long nap because it is tired.
C) Protection from the heat.
D) Protection from the cold.
  • 15. Why do living things need energy?
A) To become extinct.
B) To survive.
C) To look at the stars during the day.
  • 16. True or false. Green beans get energy from the sun. When we eat the green beans, we get their energy. Then we digest them.
A) False
B) True
  • 17. What do food webs show?
A) One possible path along which energy can move through an ecosystem.
B) The only possible path for energy to travel within an ecosystem.
  • 18. What does an energy pyramid show that a food chain does not?
A) Energy pyramids show the healthiest foods for humans to eat.
B) Energy pyramids shows how energy flows, it does not show what eats what.
  • 19. True or false. More energy is available at the bottom of a food chain because at the top, organisms use the energy for heat, food, and other needs.
A) False
B) True
  • 20. What will happen to an organism at the end of a food chain if they can’t get enough food to supply their energy needs?
A) They will live.
B) They will die.
C) Nothing will happen to them.
  • 21. Hawks are predators that have sharp claws and curved beaks. What kinds of adaptations are these?
A) Body Processes
B) Physical
C) Behavioral
  • 22. Why is it a bad idea for a parasite to kill its host?
A) It isn't a bad idea, if it kills it, then it doesn't have to worry about it anymore.
B) If a parasite kills its host then it is happy.
C) If it kills its host then it will no longer have a place to live or food to eat.
  • 23. True or false. Most fixed nitrogen is fixed by bacteria in the soil.
A) True
B) False
Les étudiants ayant complété ce test ont aussi complété :
Ch. 7 lesson 1 p.167-169
Ch. 7 lesson 2 p. 170-175
Ch. 7 lesson 3 p. 176-177
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