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