How to Identify and Classify Starfruits
  • 1. What is the defining visual characteristic of a starfruit?
A) Distinctive star shape when sliced
B) Bright red color
C) Smooth, waxy skin
D) Perfectly round shape
  • 2. What is the scientific name of the starfruit tree?
A) Mangifera indica
B) Averrhoa carambola
C) Citrus sinensis
D) Malus domestica
  • 3. When is starfruit typically harvested?
A) Mid-summer
B) Late winter
C) Early spring
D) Late summer to early winter
  • 4. What is a key difference between sweet and sour varieties of starfruit?
A) Oxalic acid content
B) Size of the fruit
C) Leaf shape
D) Number of ribs
  • 5. Which of the following is a characteristic of a ripe starfruit?
A) Presence of mold
B) Slightly yielding to pressure
C) Completely green color
D) Very hard texture
  • 6. How many ridges (points of the star) does a typical starfruit have?
A) 3
B) 9
C) 5
D) 7
  • 7. Which color indicates a more mature starfruit?
A) Green
B) Light pink
C) Dark brown
D) Yellow-orange
  • 8. What climate is best suited for growing starfruit trees?
A) Arctic
B) Desert
C) Temperate
D) Tropical and subtropical
  • 9. What type of soil does starfruit prefer?
A) Salty soil
B) Well-drained soil
C) Clay soil
D) Sandy soil that retains water
  • 10. Why is it important to select the right variety of starfruit?
A) All varieties taste the same
B) Size is the only variable
C) Taste and sweetness levels vary greatly
D) Color is the only difference
  • 11. Which variety is generally considered sweeter?
A) Arkin
B) Golden Star
C) Newcomb
D) Maher Dwarf
  • 12. What internal feature can help differentiate varieties of starfruit?
A) The length of the ridges
B) The presence or absence of seeds
C) The weight of the fruit
D) The thickness of the skin
  • 13. What is the best way to store starfruit after harvesting?
A) Freeze immediately
B) Refrigerate at cool temperatures
C) Store in a paper bag at room temperature
D) Leave at room temperature in sunlight
  • 14. What is a common use for unripe, sour starfruit?
A) Pickling or chutney
B) Baking into pies
C) Eating raw
D) Making juice
  • 15. What nutritional component is starfruit relatively high in?
A) Protein
B) Calcium
C) Fat
D) Vitamin C
  • 16. What is a sign of overripe starfruit?
A) No aroma
B) Bright, shiny skin
C) Firm to the touch
D) Soft, mushy texture
  • 17. How does the color of the fruit indicate its stage?
A) Black when unripe, white when ripe
B) Red when unripe, blue when ripe
C) Orange when unripe, green when ripe
D) Green when unripe, yellow/orange when ripe.
  • 18. Which of the following diseases mostly affects starfruit?
A) Anthracnose
B) Apple Scab
C) Citrus Canker
D) Powdery Mildew
  • 19. What pest is known to damage starfruit trees?
A) Mealybugs
B) Aphids
C) Fruit flies
D) Spider mites
  • 20. Which part of the starfruit plant is commonly used for propagation?
A) Leaves
B) Stem cuttings
C) Roots
D) Flowers
  • 21. How should starfruit trees be pruned for optimal fruit production?
A) Never prune starfruit trees
B) Remove all new growth
C) Remove dead or crossing branches
D) Prune heavily in winter
  • 22. Which of these is NOT a use for starfruit?
A) As a garnish
B) In desserts
C) In salads
D) As a fuel source
  • 23. How does sun exposure affect the fruit?
A) Sunlight does not affect starfruit
B) More sun leads to larger fruit
C) More sun leads to sweeter fruit
D) More sun leads to bitter fruit
  • 24. What should you do if you find a starfruit with brown spots?
A) Cut away the affected area
B) Wash the fruit thoroughly
C) Throw the fruit away immediately
D) The spots are just sugar
  • 25. How does the shape of the ridge affect the flavor?
A) Rounded ridges indicate a sweet taste.
B) Flavor is consistent regardless of ridge shape.
C) The shape of the ridge indicates the origin of the tree.
D) Sharp ridges indicate a sour taste.
  • 26. What is the purpose of bagging the fruit on the tree?
A) To increase the sweetness.
B) To make the fruit change colors.
C) To protect from pests.
D) To make the fruit larger.
  • 27. What is a 'dwarf' starfruit variety?
A) A sweeter flavor
B) A small fruit size
C) A faster growth rate
D) A compact tree size
  • 28. Which of the following can increase the risk of toxicity of starfruit?
A) High blood pressure
B) Kidney problems
C) Asthma
D) Diabetes
  • 29. What is the best time of day to water starfruit trees?
A) Does not matter
B) Late evening
C) Early morning
D) Midday
  • 30. What type of fertilizer is recommended for starfruit trees?
A) Balanced fertilizer
B) High potassium fertilizer
C) High phosphorus fertilizer
D) High nitrogen fertilizer
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