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