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How to Identify and Classify Oak Trees - Quiz
Contributed by: Crossley
  • 1. What is the most reliable characteristic for oak tree identification?
A) Bark color
B) Acorn size
C) Leaf shape and lobing pattern
D) Overall tree size
  • 2. Which oak group typically has leaves with rounded lobes?
A) Pin oaks
B) White oaks
C) Red oaks
D) Black oaks
  • 3. Red oaks generally have leaves with...
A) Scaly surfaces
B) Rounded lobes
C) Smooth edges
D) Bristle-tipped lobes
  • 4. What is a key characteristic of acorns in the white oak group?
A) Acorns are always bitter
B) Acorns have hairy caps
C) Acorns mature in two seasons
D) Acorns mature in one season
  • 5. How many seasons does it take for red oak acorns to mature?
A) Four
B) Three
C) Two
D) One
  • 6. Which of these leaf features is MOST helpful for differentiating between similar oak species?
A) Lobe depth and shape
B) Overall leaf length
C) Petiole color
D) Vein thickness
  • 7. What type of bark is characteristic of a mature white oak?
A) Light gray, scaly or flaky
B) Reddish-brown, peeling
C) Dark gray, deeply furrowed
D) Smooth, greenish-gray
  • 8. Which oak is known for its deeply cut, almost fern-like leaves?
A) Red Oak
B) White Oak
C) Bur Oak
D) Pin Oak
  • 9. What is the term for the stalk of an acorn?
A) Cotyledon
B) Hypocotyl
C) Stipe
D) Peduncle
  • 10. Which oak species is known for its exceptionally large acorns?
A) Scarlet Oak
B) Bur Oak
C) Post Oak
D) Willow Oak
  • 11. Which oak has leaves that resemble willow leaves?
A) Willow Oak
B) Laurel Oak
C) Shingle Oak
D) Water Oak
  • 12. Which is NOT a characteristic used for oak ID?
A) Bark texture
B) Soil pH preference
C) Leaf shape
D) Acorn cup shape
  • 13. What describes the shape of a Post Oak leaf?
A) Ovate
B) Cruciform
C) Cordate
D) Lanceolate
  • 14. Which oak species is known for its fire resistance?
A) Scarlet Oak
B) Black Oak
C) White Oak
D) Pin Oak
  • 15. The cupule of an acorn refers to the...
A) Cap
B) Peduncle
C) Nut
D) Embryo
  • 16. What is the arrangement of oak leaves on a twig?
A) Opposite
B) Basal
C) Alternate
D) Whorled
  • 17. Which of the following is a hybrid oak?
A) Never cross with other oaks
B) Easily identified by leaf shape
C) Always sterile
D) Inherently variable in characteristics
  • 18. What does 'deciduous' mean?
A) Needle-bearing
B) Cone-bearing
C) Evergreen
D) Sheds leaves annually
  • 19. What is the term for hairs on a leaf surface?
A) Pubescence
B) Lenticels
C) Stomata
D) Glabrousness
  • 20. Which type of habitat is least likely to support oak tree growth?
A) Upland forest
B) Bottomland forest
C) Savanna
D) Saltwater marsh
  • 21. What characteristic is used to identify Shumard Oak?
A) Rounded leaf lobes and smooth bark.
B) Small acorns with hairy caps.
C) Deeply lobed leaves and large acorns.
D) Leaves that are almost entirely without lobes.
  • 22. What does the term 'glabrous' mean when describing a leaf?
A) Hairy
B) Waxy
C) Smooth and hairless
D) Rough
  • 23. Acorn color is generally...
A) Variable and not a primary ID characteristic
B) Always brown in red oaks
C) Always black
D) Always green in white oaks
  • 24. Which oak often retains its dead leaves through winter (marcescent)?
A) Young pin oak
B) Live oak
C) Southern red oak
D) Mature white oak
  • 25. What tool is best for getting a closer look at the tree leaves?
A) Axe
B) Binoculars
C) Hand saw
D) Shovel
  • 26. What factor must be considered when identifying oak trees?
A) Root depth
B) Tree height
C) Branch structure
D) Location
  • 27. Which oak is considered to be evergreen?
A) White Oak
B) Live Oak
C) Black Oak
D) Red Oak
  • 28. Which oak has a distinctive cross-shaped (cruciform) leaf?
A) Post Oak
B) Overcup Oak
C) Chestnut Oak
D) White Oak
  • 29. What is a common use for oak wood?
A) Paper production
B) Furniture
C) Rubber production
D) Cotton production
  • 30. What characteristic is MOST important when identifying Oak trees?
A) Branch Angles
B) Leaves
C) Trunk Size
D) Height
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