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How to Identify and Classify Dragon Fruits - Exam
Contributed by: Woolley
  • 1. What is the most common flesh color of dragon fruit?
A) Black
B) Green
C) Blue
D) White
  • 2. The scientific name for dragon fruit is primarily from what genus?
A) Solanum
B) Hylocereus
C) Citrus
D) Mangifera
  • 3. What is the defining characteristic of a 'red skin, white flesh' dragon fruit?
A) Red or pink skin with white flesh.
B) Green skin with red flesh.
C) Yellow skin with white flesh.
D) Purple skin with purple flesh.
  • 4. What is the shape of a typical dragon fruit?
A) Square
B) Triangular
C) Round
D) Oblong
  • 5. What feature distinguishes Hylocereus costaricensis?
A) No thorns
B) Yellow skin
C) Deep magenta flesh
D) Very small fruit
  • 6. How can you generally tell if a dragon fruit is ripe?
A) Stem is completely dry and brown
B) Skin is hard as a rock
C) Skin turns bright and slightly soft
D) Skin is completely green
  • 7. What is the texture of dragon fruit flesh generally described as?
A) Similar to kiwi
B) Like a pear
C) Like an apple
D) Like a banana
  • 8. Which type of dragon fruit has yellow skin and white flesh?
A) Selenicereus testatus
B) Hylocereus undatus
C) Hylocereus megalanthus
D) Hylocereus costaricensis
  • 9. What are the small black seeds in dragon fruit rich in?
A) Iron
B) Calcium
C) Omega-3 fatty acids
D) Sodium
  • 10. What characteristic of the plant itself can aid identification?
A) Stem shape
B) Fruit weight
C) Seed size
D) Root color
  • 11. The 'American Beauty' is characterized by what flesh color?
A) White
B) Magenta
C) Yellow
D) Pink
  • 12. What is the flavor profile of a typical dragon fruit?
A) Extremely bitter
B) Very sour
C) Intensely spicy
D) Mildly sweet
  • 13. What is the significance of the bracts (scales) on the fruit?
A) They determine the sweetness
B) They indicate ripeness
C) They are always the same across all varieties
D) They can help distinguish varieties
  • 14. Which of these dragon fruit varieties is known for its smaller size?
A) Hylocereus megalanthus
B) Selenicereus testatus
C) Hylocereus undatus
D) Hylocereus costaricensis
  • 15. What factor most greatly affects the flavor intensity of dragon fruit?
A) Size of the fruit
B) Variety and growing conditions
C) Thickness of the stem
D) Color of the skin
  • 16. What growing habit describes the Dragon Fruit plant?
A) Tree
B) Climbing vine
C) Shrub
D) Ground cover
  • 17. The term 'pitaya' refers to which fruit?
A) Mango
B) Guava
C) Papaya
D) Dragon fruit
  • 18. What is one visual cue that indicates fruit maturity, looking at the wing bracts?
A) Bracts become more vibrant green
B) Bracts fall off completely
C) Bracts begin to dry out and turn brown
D) Bracts secrete a sticky substance
  • 19. What's a key distinction between *Hylocereus* and *Selenicereus*?
A) Flowering time (night vs. day)
B) Fruit size
C) Skin color
D) Taste profile
  • 20. If you see a dragon fruit with extremely prominent and pronounced ribs, which variety could it be?
A) Hylocereus undatus
B) Hylocereus costaricensis
C) Hylocereus megalanthus
D) Selenicereus testatus
  • 21. What's the significance of self-fertility in dragon fruit varieties?
A) They don't require cross-pollination
B) They grow faster
C) They always produce sweeter fruit
D) They are more resistant to pests
  • 22. How does sun exposure affect dragon fruit skin color?
A) More sun makes the skin green
B) More sun enhances red/pink color
C) Sun exposure has no effect
D) More sun makes the skin white
  • 23. What climate is most suitable for Dragon Fruit production?
A) Desert
B) Tropical or subtropical
C) Temperate
D) Arctic
  • 24. Which characteristic will NOT help you identify a specific variety?
A) Skin color
B) Seed color
C) Fruit size
D) Flesh color
  • 25. What role do insects and animals play in Dragon Fruit reproduction?
A) Pollination
B) Defense
C) Seed dispersal
D) Nutrient Absorption
  • 26. Which part of the dragon fruit flower becomes the fruit?
A) Sepals
B) Ovary
C) Petals
D) Stamen
  • 27. Why is knowing the variety important for commercial dragon fruit growers?
A) Determines plant height
B) Changes pruning requirements
C) Affects market value
D) Impacts watering needs
  • 28. What is the edible part of the dragon fruit?
A) Flesh
B) Skin
C) Leaves
D) Seeds only
  • 29. What does 'determinate growth' mean in relation to dragon fruit?
A) The plant stops growing at a certain point
B) It only grows in specific seasons
C) It grows indefinitely
D) It only grows in specific climates
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