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