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