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