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How to Identify and Classify Rubber Trees - Quiz
Contributed by: Crossley
  • 1. What is the scientific name of the most common rubber tree?
A) Ficus elastica
B) Castilla elastica
C) Manihot esculenta
D) Hevea brasiliensis
  • 2. Rubber trees are native to which continent?
A) Asia
B) South America
C) Australia
D) Africa
  • 3. What is the primary product harvested from rubber trees?
A) Fruit
B) Resin
C) Latex
D) Wood
  • 4. What is the typical color of the latex from a rubber tree?
A) Milky White
B) Brown
C) Green
D) Yellow
  • 5. What is the arrangement of leaves on a rubber tree stem?
A) Opposite
B) Alternate
C) Basal
D) Whorled
  • 6. What type of leaf is characteristic of Hevea brasiliensis?
A) Needle-like
B) Scale-like
C) Simple
D) Compound
  • 7. How many leaflets are typically found in a compound leaf of Hevea brasiliensis?
A) Five
B) Nine
C) Seven
D) Three
  • 8. What is the general shape of the leaflets of Hevea brasiliensis?
A) Circular
B) Ovate
C) Lanceolate
D) Elliptical
  • 9. Are rubber tree flowers typically large and showy?
A) No
B) Sometimes
C) Yes, they are large and brightly colored
D) Depends on the climate
  • 10. What type of climate do rubber trees thrive in?
A) Tropical
B) Arid
C) Arctic
D) Temperate
  • 11. What is the tapping process for rubber extraction?
A) Pulling out the roots
B) Burning the leaves
C) Incising the bark
D) Removing a branch
  • 12. What is the purpose of tapping a rubber tree?
A) To stimulate growth
B) To fertilize the tree
C) To collect latex
D) To prune the tree
  • 13. What is the name of the fruit produced by the Hevea brasiliensis tree?
A) Berry
B) Capsule
C) Drupe
D) Pome
  • 14. What is the texture of the bark of a mature Hevea brasiliensis tree?
A) Smooth
B) Scaly
C) Rough
D) Spiky
  • 15. What is a common pest affecting rubber trees?
A) Caterpillars
B) Leaf blight
C) Aphids
D) Grasshoppers
  • 16. In what type of soil do rubber trees generally grow best?
A) Clay
B) Well-drained
C) Sandy
D) Waterlogged
  • 17. What is the significance of clonal propagation in rubber tree cultivation?
A) Slowing growth
B) Reducing yield
C) Maintaining desirable traits
D) Increasing pest susceptibility
  • 18. What is the average height of a mature rubber tree?
A) 5-10 meters
B) 50-60 meters
C) 25-40 meters
D) 10-20 meters
  • 19. What is a 'tapping panel' on a rubber tree?
A) The area where latex is extracted
B) The canopy of the tree
C) A type of fertilizer
D) The root system
  • 20. Which country is the largest producer of natural rubber?
A) Thailand
B) Malaysia
C) Indonesia
D) India
  • 21. What is the approximate lifespan of a commercially productive rubber tree?
A) 50-60 years
B) 25-30 years
C) 5-10 years
D) 10-15 years
  • 22. What is the seed dispersal mechanism of Hevea brasiliensis?
A) Animal
B) Explosive
C) Wind
D) Water
  • 23. What does 'drought stress' refer to in rubber tree cultivation?
A) Excessive sunlight
B) Pest infestation
C) Lack of water
D) Nutrient deficiency
  • 24. What is 'coagulation' in the context of rubber latex?
A) Solidification of latex
B) Dilution of latex
C) Filtering of latex
D) Bleaching of latex
  • 25. Which of these is NOT a common use of natural rubber?
A) Paper production
B) Gloves
C) Tires
D) Adhesives
  • 26. What is the role of ammonia in latex preservation?
A) Improving color
B) Accelerating coagulation
C) Preventing coagulation
D) Adding strength
  • 27. What is the term for replanting rubber trees after the previous ones are no longer productive?
A) Succession
B) Deforestation
C) Afforestation
D) Rehabilitation
  • 28. What is bud grafting?
A) Attaching a bud to another plant
B) Removing buds from a plant
C) Planting buds directly in soil
D) Spraying buds with fertilizer
  • 29. What is the importance of fertilizer in rubber tree cultivation?
A) Increase soil erosion
B) Attract pests
C) Prevent latex production
D) Promote healthy growth
  • 30. What is the function of cover crops in rubber plantations?
A) Increasing water runoff
B) Slowing tree growth
C) Suppressing weeds and improving soil
D) Attracting pests
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