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How to Identify and Classify Mahogany Trees
Contributed by: Crossley
  • 1. What is the primary distinguishing feature of genuine mahogany wood?
A) Wavy grain
B) Straight grain
C) Burl grain
D) Interlocked grain
  • 2. Which genus primarily contains commercially valuable mahogany species?
A) Swietenia
B) Khaya
C) Cedrela
D) Entandrophragma
  • 3. Where is Swietenia macrophylla (Big-leaf Mahogany) primarily found?
A) Central and South America
B) West Africa
C) Madagascar
D) Southeast Asia
  • 4. What is a common characteristic of mahogany leaves?
A) Pinnately compound
B) Needle-like
C) Simple, entire
D) Palmately compound
  • 5. Which characteristic is NOT typically used to identify mahogany?
A) Bark texture
B) Flower color
C) Wood grain
D) Leaf shape
  • 6. What is the Janka hardness scale used for?
A) Measuring tree height
B) Measuring wood density and hardness
C) Measuring leaf size
D) Measuring soil pH
  • 7. Which mahogany species is considered the most valuable?
A) Toona ciliata (Red Cedar)
B) Swietenia macrophylla (Big-leaf Mahogany)
C) Khaya senegalensis (African Mahogany)
D) Swietenia mahagoni (West Indian Mahogany)
  • 8. What is the typical color of freshly cut mahogany wood?
A) Gray
B) Pinkish-brown
C) Yellow
D) Green
  • 9. Which of these is a sustainable forestry certification?
A) OSHA (Occupational Safety and Health Administration)
B) FSC (Forest Stewardship Council)
C) USDA (United States Department of Agriculture)
D) EPA (Environmental Protection Agency)
  • 10. What does the term 'figure' refer to in wood identification?
A) The moisture content of the wood
B) The size of the tree
C) The pattern or appearance of the grain
D) The age of the tree
  • 11. How can you distinguish genuine mahogany from similar-looking woods like Sapele?
A) By weighing the wood
B) By looking at the tree height
C) By smelling the wood
D) By examining the end grain pattern
  • 12. What is a common use for mahogany wood?
A) Firewood
B) Paper pulp
C) Fine furniture
D) Construction framing
  • 13. What is the shape of the fruit of Swietenia species?
A) Drupe
B) Acorn
C) Capsule
D) Berry
  • 14. Which factor most significantly impacts the value of mahogany lumber?
A) Tree age
B) Root depth
C) Grain quality and figure
D) Leaf size
  • 15. What is the role of 'pores' in wood identification?
A) They protect the tree from insects
B) They determine the tree's height
C) They transport water and nutrients in the living tree
D) They are responsible for the wood's color
  • 16. Which of these is NOT a common characteristic used to identify trees in general?
A) Leaf shape
B) Bark characteristics
C) Soil type surrounding the tree
D) Branching pattern
  • 17. Why is sustainable harvesting of mahogany important?
A) To increase the price of mahogany
B) To change the color of the wood
C) To prevent deforestation and species endangerment
D) To make furniture heavier
  • 18. What climate is best suited for growing mahogany trees?
A) Tropical
B) Arctic
C) Desert
D) Temperate
  • 19. What is the term for the arrangement of leaves on a stem?
A) Phyllotaxy
B) Morphology
C) Dendrology
D) Taxonomy
  • 20. What is the impact of heartwood on wood durability?
A) Heartwood is less durable than sapwood
B) Heartwood does not affect durability
C) Heartwood and sapwood have equal durability
D) Heartwood is more durable than sapwood
  • 21. Which insect is a significant pest of mahogany trees?
A) Termites
B) Beetles
C) Mahogany Shoot Borer
D) Aphids
  • 22. What type of wood is Khaya often referred to as?
A) Brazilian Mahogany
B) Canadian Mahogany
C) Philippine Mahogany
D) African Mahogany
  • 23. What does 'quartersawn' lumber refer to?
A) Lumber cut perpendicular to the growth rings
B) Lumber treated with chemicals
C) Lumber cut parallel to the growth rings
D) Lumber cut from the center of the tree
  • 24. Which is a characteristic of seasoned mahogany wood?
A) Reduced moisture content
B) Increased susceptibility to decay
C) Brighter color
D) Increased weight
  • 25. What is 'sapwood'?
A) The root system of the tree
B) The outer, younger wood of the tree
C) The bark of the tree
D) The inner, older wood of the tree
  • 26. What are lenticels?
A) Pores on the bark used for gas exchange
B) The seeds of the tree
C) The leaves of the tree
D) The roots of the tree
  • 27. What is dendrology?
A) The study of climate
B) The study of insects
C) The study of trees
D) The study of rocks
  • 28. How can climate change impact mahogany populations?
A) Decreasing pest infestations
B) Altering growing conditions and increasing pest infestations
C) Improving wood quality
D) Increasing tree lifespan
  • 29. Which organization regulates the international trade of endangered species, including some mahogany?
A) NATO
B) CITES
C) UN
D) WHO
  • 30. What is a common method of propagating mahogany trees?
A) Layering
B) Seeds
C) Grafting
D) Budding
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