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Noxious Weeds
Contributed by: Ochs
  • 1. What is an ecosystem?
A) The water cycle in a given area
B) All of the living and nonliving things that affect a given habitat
C) The life cycle of plants and animals in a community
D) None of these answers is correct
E) It's another word for environmental science
  • 2. What is the role of a plant in an ecosystem?
A) Absorb excess water from the soil
B) None of these answers is correct
C) It eats consumers
D) Converts the sun's energy to food
E) To provide beauty to the other plants around it
  • 3. What is a weed?
A) Any plant growing where it is not wanted
B) Plants of foreign origin that injure the environment in which they are introduced
C) A type of reed used to make furniture
D) A herb used by the ancient Egyptians to mummify the bodies of Pharaohs
E) All of these answers are correct
  • 4. What is a noxious weed?
A) Any plant growing where it is not wanted
B) A plant that only grows in mud
C) Plants of foreign origin that injure the environment in which they are introduced
D) A weed that always smells really bad
  • 5. How do noxious weeds affect our environment?
A) Fire hazards
B) Soil erosion
C) All of these answers are correct
D) Destroy habitat
E) Reduce biodiversity
  • 6. How do noxious weeds reduce biodiversity?
A) By helping native plants grow better
B) By isolating fungi and bacteria that would kill off other plants
C) By creating monoculture's
D) By making more soil nutrients to enrich the soil
  • 7. How do noxious weeds destroy habitat?
A) None of these answers are correct
B) They can crowd out native plants
C) They start fires
D) They provide food for predators
E) They actually help the environment by killing off unwanted insects
  • 8. What is allelopathy?
A) A chemical that can prevent the growth of other plants
B) Using Aloe Vera plants to heal injuries
C) The study of all elements in an ecosystem
D) The study of the sea animals called Allelos
  • 9. What noxious weed is the number one concern in Natrona County?
A) Scottish thistle
B) Leafy spurge
C) Cheatgrass
D) Spotted knapweed
E) Dalmatian toadflax
  • 10. What noxious weed produces 1000 seeds per year per plant?
A) Spotted knapweed
B) Salt cedar
C) Cheatgrass
D) Perennial pepperweed
E) Leafy spurge
  • 11. What is a bi-annual plant?
A) A plant that grows for two years before dying
B) A plant that has two main stems
C) A plant that growths for two out of the four seasons before dying
D) A plant that blooms every other year
  • 12. What is an annual plant?
A) Noe of these answers are correct
B) A plant that dies off every year
C) A plant that never flowers
D) A plant that grows back every year
E) A plant that blooms every year
  • 13. What is a perennial plant?
A) A type pf weed related to pepperweed
B) A type of bush that grows in Natrona County
C) A plant that comes grows back every year
D) A plant that never dies and never has flowers
E) All of these answers are correct
  • 14. What is the number one noxious weed in the world?
A) Canada thistle
B) Leafy spurge
C) Cheatgrass
D) Spotted knapweed
E) Salt cedar
  • 15. Education is one of many ways to control noxious weeds.
A) True
B) False
  • 16. What is the second leading cause of extinction worldwide?
A) Lack of producers in the food chain
B) Noxious weeds
C) Climate change
D) Hunting
E) Drought
  • 17. What is integrated weed management?
A) Management of multiple weeds
B) None of these answers is correct
C) Using chemicals to destroy all weeds
D) Use multiple ways to control noxious weeds
E) A way to destroy all of the weeds in an area at one time
  • 18. Noxious weeds can directly or indirectly harm public health
A) True
B) False
  • 19. What is biodiversity?
A) A habitat that includes two types of biomes
B) The variety of plants and animals in a habitat
C) The life cycle of plants and animals in a community
D) All of these answers are correct
E) It's another word for environmental science
  • 20. Noxious weeds can affect recreation.
A) False
B) True
  • 21. Biological control of noxious weeds involves pulling the plants or cutting them down
A) True
B) False
  • 22. Weeds can actually decrease tourism
A) True
B) False
  • 23. Fish are not affected by noxious weeds, but ducks and geese can be
A) True
B) False
  • 24. Salt cedar can be found in the city of Casper
A) False
B) True
  • 25. What method can be used to control noxious weeds?
A) All of these answers are correct
B) Mechanical
C) Cultural
D) Biological
E) Chemical
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