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