How to Identify and Classify Locust Trees
  • 1. What is a key identifying characteristic of most locust trees?
A) Compound leaves
B) Needle-like leaves
C) Simple leaves
D) Waxy leaves
  • 2. Which type of thorn arrangement is common in many locust species?
A) Single thorns at nodes
B) No thorns
C) Paired thorns at nodes
D) Thorns along the leaf veins
  • 3. Honey locust thorns are often found where?
A) On the trunk and branches
B) Only on the roots
C) Only on the leaves
D) Only at the base of the tree
  • 4. What is the typical flower color of locust trees?
A) Yellow
B) Red
C) White
D) Blue
  • 5. Locust trees belong to what plant family?
A) Pine family (Pinaceae)
B) Rose family (Rosaceae)
C) Legume family (Fabaceae)
D) Maple family (Aceraceae)
  • 6. What type of fruit do locust trees produce?
A) A cone
B) A berry
C) A pod
D) An apple
  • 7. What is a key difference between Black Locust and Honey Locust leaves?
A) Black Locust has fewer leaflets per leaf.
B) Honey Locust leaves are always smaller.
C) Honey Locust has fewer leaflets per leaf.
D) Black Locust leaves are always larger.
  • 8. Which locust species is known for its extremely long and branched thorns?
A) Honey Locust (Gleditsia triacanthos)
B) Black Locust (Robinia pseudoacacia)
C) Bristly Locust (Robinia hispida)
D) Water Locust (Gleditsia aquatica)
  • 9. What is a common use for Black Locust wood?
A) Christmas trees
B) Softwood lumber
C) Fence posts
D) Paper production
  • 10. What is the native range of the Black Locust?
A) Southwest United States
B) Southeastern United States
C) Northeastern United States
D) Pacific Northwest
  • 11. What is a characteristic of the Black Locust's bark?
A) Peeling
B) Smooth and thin
C) Green
D) Deeply furrowed
  • 12. What characteristic helps distinguish the Water Locust from other locusts?
A) It thrives in wet or swampy areas
B) It lacks thorns
C) It grows only in deserts
D) It has bright red flowers
  • 13. Which locust species is known for its pink flowers?
A) Bristly Locust (Robinia hispida)
B) Water Locust (Gleditsia aquatica)
C) Black Locust (Robinia pseudoacacia)
D) Honey Locust (Gleditsia triacanthos)
  • 14. What type of soil does Black Locust prefer?
A) Well-drained soil
B) Saturated soil
C) Clay soil
D) Sandy soil
  • 15. What is a common problem associated with Honey Locust trees in urban settings?
A) Attracting bears
B) Slow growth rate
C) Prolific seed pods
D) Susceptibility to oak wilt
  • 16. Which locust species has flattened pods?
A) Honey Locust
B) Bristly Locust
C) Black Locust
D) New Mexican Locust
  • 17. What is a distinguishing feature of New Mexican Locust?
A) It grows extremely tall.
B) It has round leaves.
C) It is often a shrub or small tree.
D) It has no thorns.
  • 18. What is a defining characteristic of the thorns of a Honey Locust tree?
A) They are always straight.
B) They are often branched.
C) They are very small and inconspicuous.
D) They are always covered in hair.
  • 19. What is a benefit of planting locust trees?
A) Soil erosion
B) Attracting harmful insects
C) Depleting soil nutrients
D) Nitrogen fixation
  • 20. What is the typical growth rate of a Black Locust tree?
A) Moderate
B) Slow
C) Fast
D) Very slow
  • 21. What is an important consideration when planting locust trees near structures?
A) Their susceptibility to fire
B) Their need for constant pruning
C) Their aggressive root system
D) Their sensitivity to wind
  • 22. What is the term for leaves that are divided into multiple leaflets?
A) Alternate
B) Simple
C) Compound
D) Opposite
  • 23. Where would you most likely find a Water Locust?
A) Tundra
B) Mountains
C) Swamps
D) Deserts
  • 24. Which locust species is known to spread aggressively by root suckers?
A) Black Locust
B) Water Locust
C) Honey Locust
D) Chinese Locust
  • 25. What is the shape of the leaflets of Black Locust?
A) Oval
B) Heart-shaped
C) Round
D) Needle-like
  • 26. What kind of climate does Honey Locust prefer?
A) Arctic
B) Temperate
C) Tropical
D) Desert
  • 27. Which of these is NOT a characteristic to use when identifying locust trees?
A) Leaf structure
B) Thorn presence
C) Root color
D) Pod shape
  • 28. Where are the Black Locust's fragrant flowers produced?
A) At the tree's base
B) Individually
C) In drooping clusters
D) Erect spikes
  • 29. What is a key ecological role of locust trees?
A) Preventing other plant growth
B) Water depletion
C) Soil stabilization
D) Releasing toxins into the soil
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