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How to Identify and Classify Leeks
Contributed by: Crossley
  • 1. What plant family do leeks belong to?
A) Solanaceae
B) Alliaceae
C) Brassicaceae
D) Asteraceae
  • 2. The edible portion of a leek is primarily the:
A) Seed
B) Root
C) Stem and lower leaves
D) Flower
  • 3. What color is the 'shaft' of a well-blanched leek?
A) Green
B) White
C) Brown
D) Purple
  • 4. Which characteristic is MOST important when judging leek quality?
A) Stem Length
B) Cleanliness
C) Root Size
D) Number of Leaves
  • 5. What does 'bolting' in a leek refer to?
A) Leaf blight
B) Root rot
C) Premature flowering
D) Rapid growth
  • 6. What is a common pest that affects leeks?
A) Cabbage worms
B) Aphids
C) Onion thrips
D) Spider mites
  • 7. Which soil type is generally best for growing leeks?
A) Well-drained loam
B) Sandy soil
C) Rocky soil
D) Clay soil
  • 8. What is the typical spacing between leek plants?
A) 6-8 inches
B) 24-36 inches
C) 2-4 inches
D) 12-18 inches
  • 9. Which of these is a characteristic of the 'Bandit' leek variety?
A) Early maturing
B) Large size
C) Strong onion flavor
D) Purple leaves
  • 10. What is the purpose of 'earthing up' leeks?
A) To fertilize the roots
B) To prevent pests
C) To blanch the stem
D) To support the plant
  • 11. Leeks are typically harvested in which season?
A) Late Spring
B) Summer
C) Spring
D) Fall and Winter
  • 12. What shape are leek seeds?
A) Flat and Red
B) Oval and White
C) Angular and Black
D) Round and Brown
  • 13. Which of these is a disease that can affect leeks?
A) Powdery Mildew
B) Black Spot
C) Rust
D) White Rot
  • 14. How do you differentiate a leek from a green onion?
A) Leeks always have purple tips.
B) Leeks have a milder flavor and larger size.
C) Green onions are harvested with the roots.
D) Green onions are always white at the base.
  • 15. What is the best way to store harvested leeks?
A) In direct sunlight, uncovered.
B) In the freezer, chopped.
C) At room temperature, washed.
D) In the refrigerator, unwashed, in a plastic bag.
  • 16. What is a key difference between short-day and long-day leek varieties?
A) Long-day leeks have a stronger flavor.
B) Long-day leeks are more resistant to pests.
C) Short-day leeks mature earlier in the season.
D) Short-day leeks are always larger.
  • 17. Which nutrient is MOST important for leek growth?
A) Phosphorus
B) Nitrogen
C) Potassium
D) Calcium
  • 18. What planting method encourages long, white shafts?
A) Planting in containers.
B) Planting in a trench and gradually filling it in.
C) Planting on a slope.
D) Planting on a raised bed.
  • 19. Why is crop rotation important when growing leeks?
A) To prevent soil-borne diseases and pests.
B) To increase sunlight exposure.
C) To make harvesting easier.
D) To improve soil drainage.
  • 20. What is the ideal pH level for leek cultivation?
A) 6.0-7.0
B) 8.5-9.5
C) 4.0-5.0
D) 7.5-8.5
  • 21. Which continent did leeks originate from?
A) Asia
B) Africa
C) South America
D) Europe
  • 22. What is the botanical name for leeks?
A) Allium cepa
B) Allium sativum
C) Allium schoenoprasum
D) Allium ampeloprasum var. porrum
  • 23. How do you prepare leeks before cooking?
A) Trim the roots and the green tops entirely.
B) Peel the outer layer off.
C) Thoroughly wash between the layers.
D) Soak in saltwater to remove any dirt.
  • 24. Which of the following is NOT a way to propagate leeks?
A) Transplants
B) Division (occasionally)
C) Cuttings
D) Seeds
  • 25. Which of the following best describes the flavor profile of a leek?
A) Bitter and herbaceous
B) Spicy and pungent
C) Mild onion-like
D) Sweet and garlicky
  • 26. What is a 'leek moth'?
A) A pest that burrows into leek leaves.
B) A beneficial insect that pollinates leeks.
C) A type of fertilizer made from leeks.
D) A hybrid variety of leek.
  • 27. What is the proper technique for planting leek seedlings?
A) Make a hole with a dibber and drop the seedling in.
B) Plant the seedlings in clusters.
C) Lay the seedlings flat on the soil surface.
D) Bury the seedlings deeply, covering the first leaves.
  • 28. How does consistent watering impact leek development?
A) Increases the strength of the onion flavor.
B) Causes the leeks to grow smaller.
C) Promotes uniform growth and prevents bolting.
D) Encourages root rot.
  • 29. Which element does wood ash primarily provide to the soil, benefiting leek growth?
A) Potassium
B) Nitrogen
C) Magnesium
D) Phosphorus
  • 30. What is a visual indicator that leeks are ready for harvest?
A) The shaft reaches the desired thickness.
B) The leaves start to turn yellow.
C) The roots become visible above the soil.
D) The plant begins to flower.
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