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How to Identify and Classify Blackcurrants
Contributed by: Woolley
  • 1. What is the primary color of ripe blackcurrants?
A) Bright red
B) Light green
C) Pale yellow
D) Deep purple to black
  • 2. Blackcurrants belong to which plant family?
A) Rosaceae
B) Brassicaceae
C) Solanaceae
D) Grossulariaceae
  • 3. The scent of blackcurrant leaves is often described as:
A) Aromatic and pungent
B) Sweet and floral
C) Odorless
D) Faint and grassy
  • 4. How are blackcurrants typically harvested?
A) In clusters
B) By cutting the stems
C) Individually
D) By shaking the plant
  • 5. What is a key characteristic of blackcurrant bushes in terms of thorns?
A) They have many thorns
B) They have thorns only on the leaves
C) They are thornless
D) They have thorns only on older wood
  • 6. Which of these is a common disease affecting blackcurrants?
A) Powdery mildew (usually more resistant than other Ribes)
B) Black spot
C) Reversion
D) Rust
  • 7. What is the typical shape of a blackcurrant leaf?
A) Round
B) Lobed
C) Oval
D) Needle-like
  • 8. Blackcurrants are a good source of which vitamin?
A) Vitamin C
B) Vitamin D
C) Vitamin A
D) Vitamin B12
  • 9. What is the ploidy level of most blackcurrant cultivars?
A) Haploid
B) Diploid
C) Triploid
D) Tetraploid
  • 10. What type of fruit is a blackcurrant?
A) Berry
B) Drupe
C) Pome
D) Aggregate fruit
  • 11. Which part of the blackcurrant plant is used to make crème de cassis?
A) Leaves
B) Stems
C) Roots
D) Berries
  • 12. What is the typical size of a blackcurrant berry?
A) About 0.2 cm in diameter
B) About 1 cm in diameter
C) About 5 cm in diameter
D) About 10 cm in diameter
  • 13. What is the most common method of propagating blackcurrants?
A) Grafting
B) Seed
C) Hardwood cuttings
D) Softwood cuttings
  • 14. Compared to redcurrants, blackcurrants generally have:
A) A stronger flavor
B) No flavor
C) The same flavor
D) A milder flavor
  • 15. Which pest is a significant threat to blackcurrant crops?
A) Gall mites
B) Japanese beetles
C) Aphids (less significant than on other plants)
D) Cabbage worms
  • 16. What is 'reversion' in blackcurrants?
A) Insect damage
B) A viral disease
C) A fungal disease
D) A nutrient deficiency
  • 17. What is the bloom period for blackcurrant bushes?
A) Summer
B) Spring
C) Winter
D) Autumn
  • 18. Which country is a major producer of blackcurrants?
A) United States
B) Brazil
C) Australia
D) Poland
  • 19. The fruit stalks of blackcurrants are called?
A) Strigs
B) Tendrils
C) Racemes
D) Panicles
  • 20. What is the shape of blackcurrant buds in the winter?
A) Plump and rounded
B) Covered in thorns
C) Flat and inconspicuous
D) Small and pointed
  • 21. Blackcurrants are commonly used in which type of product?
A) Salads
B) Jams and jellies
C) Stir-fries
D) Soups
  • 22. How many seeds are typically found within a single blackcurrant berry?
A) None
B) One
C) Hundreds
D) Several
  • 23. What does dioecious mean in relation to blackcurrants?
A) Requiring cross-pollination
B) Having perfect flowers
C) Having male and female flowers on separate plants
D) Blackcurrants are not dioecious; they are monoecious.
  • 24. Which of these is a potential benefit of pruning blackcurrant bushes?
A) Decreased fruit production
B) Increased susceptibility to disease
C) Increased fruit production
D) Reduced plant size
  • 25. What is the lifespan of a blackcurrant bush?
A) 1-2 years
B) 10-15 years
C) 50-100 years
D) 20-30 years
  • 26. What is the ideal pH level for growing blackcurrants?
A) Neutral (7.0)
B) Highly acidic (4.0-5.0)
C) Alkaline (8.0-9.0)
D) Slightly acidic (6.0-6.5)
  • 27. What is the chill hour requirement for most blackcurrant varieties?
A) 800-1500 hours
B) 100-200 hours
C) No chill hours needed
D) 5000 hours
  • 28. What type of climate do blackcurrants prefer?
A) Cool temperate
B) Mediterranean
C) Desert
D) Tropical
  • 29. Which is NOT typically a method used for classifying blackcurrant cultivars?
A) Yield
B) Berry size
C) Root depth
D) Disease resistance
  • 30. What is the term for the white, waxy bloom sometimes found on blackcurrant berries?
A) Farina
B) Glaucous
C) None of the above
D) Bloom
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