How to Identify and Classify Grapefruits - Exam
  • 1. What is the most common color of grapefruit pulp?
A) Green
B) Blue
C) Pink/Red
D) Purple
  • 2. Which characteristic helps differentiate a grapefruit from an orange?
A) Brighter orange peel
B) Sweeter taste
C) Larger size and flattened shape
D) Smoother peel
  • 3. What is the general taste profile of a grapefruit?
A) Bland and watery
B) Sweet and tangy
C) Tart and slightly bitter
D) Spicy and sour
  • 4. Which grapefruit variety is known for its deep red flesh?
A) Rio Red
B) Oro Blanco
C) Marsh
D) Duncan
  • 5. What is the skin texture of a typical grapefruit?
A) Smooth and thin
B) Shiny and waxy
C) Slightly bumpy and thick
D) Very rough and hard
  • 6. What is the blossom end of a grapefruit?
A) The side with the most blemishes
B) The area with the strongest aroma
C) The stem end
D) The end opposite the stem
  • 7. Which of these is a seedless grapefruit variety?
A) Ruby Red
B) Thompson
C) Duncan
D) White Marsh
  • 8. What is the approximate diameter of a medium-sized grapefruit?
A) 8-10 inches
B) 1-2 inches
C) 4-6 inches
D) 12-14 inches
  • 9. The color intensity of red grapefruit is influenced by?
A) Lycopene content
B) Vitamin C content
C) Acidity levels
D) Sugar content
  • 10. Which grapefruit variety has a yellow peel and white flesh?
A) Flame
B) Ray Ruby
C) Marsh White
D) Star Ruby
  • 11. What is the typical weight of a large grapefruit?
A) Less than 0.5 pound
B) 3.5-4 pounds
C) 2.5-3 pounds
D) 1-2 pounds
  • 12. What does 'specific gravity' indicate in grapefruits?
A) Juice content and density
B) Pesticide residue
C) Seed count
D) Vitamin content
  • 13. Grapefruit are categorized as?
A) Citrus fruits
B) Berry fruits
C) Pome fruits
D) Stone fruits
  • 14. Which country is a major producer of grapefruits?
A) United States
B) Russia
C) Germany
D) Japan
  • 15. What growing condition affects grapefruit sweetness?
A) Ample sunshine
B) High altitude
C) Excessive rain
D) Dense shade
  • 16. What is the name for the individual sections inside the grapefruit?
A) Arils
B) Segments
C) Cysts
D) Pomes
  • 17. Which term describes the grapefruit's outer layer?
A) Exocarp
B) Mesocarp
C) Endocarp
D) Hypocarp
  • 18. What is the term for the white, spongy tissue between the peel and pulp?
A) Albedo
B) Zest
C) Rind
D) Pith
  • 19. Which grapefruit variety is known for its low acid content?
A) Oro Blanco
B) Ruby Red
C) Thompson
D) Duncan
  • 20. How can you visually assess the ripeness of a grapefruit?
A) Bright green peel
B) Rock hard feel
C) Heavy for its size
D) Very light for its size
  • 21. Which nutrient is abundant in grapefruits?
A) Iron
B) Vitamin C
C) Vitamin B12
D) Calcium
  • 22. What climate is ideal for growing grapefruits?
A) Temperate
B) Desert
C) Arctic
D) Subtropical
  • 23. What does 'thin-skinned' refer to in grapefruit context?
A) A grapefruit susceptible to bruising
B) A small grapefruit
C) A grapefruit with very little flavor
D) A peel that is easy to remove
  • 24. Why are some grapefruits treated with ethylene gas?
A) To increase sweetness
B) To improve color
C) To reduce acidity
D) To extend shelf life
  • 25. Which of these characteristics indicates a higher quality grapefruit?
A) Smooth, unblemished skin
B) Soft spots
C) Numerous scars on the peel
D) Very light weight
  • 26. How should grapefruits be stored for optimal freshness?
A) Refrigerated
B) At room temperature in sunlight
C) Frozen
D) In a sealed plastic bag
  • 27. What is the main season for grapefruit harvest in many regions?
A) Spring
B) Winter
C) Autumn
D) Summer
  • 28. Which of these is NOT a common use for grapefruits?
A) Making jam
B) Eating fresh
C) Making juice
D) In salads
  • 29. What is the botanical name for grapefruit?
A) Citrus sinensis
B) Malus domestica
C) Citrus × paradisi
D) Citrus limon
  • 30. What is the effect of grapefruit juice on some medications?
A) It always enhances the effects of the medication.
B) It can interact with enzymes that metabolize drugs.
C) It completely negates the effects of the medication.
D) It has no effect on medications.
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