How to Identify and Classify Chinese Cabbages
  • 1. What is the common name for Brassica rapa subsp. pekinensis?
A) Gai Lan
B) Napa Cabbage
C) Bok Choy
D) Choy Sum
  • 2. What is the defining characteristic of Bok Choy?
A) Tightly packed head
B) Dark green leaves and white stalks
C) Loose, ruffled leaves
D) Flowering shoots
  • 3. Which Chinese cabbage is also known as Chinese broccoli?
A) Bok Choy
B) Napa Cabbage
C) Choy Sum
D) Gai Lan
  • 4. What part of Choy Sum is primarily consumed?
A) Flowering shoots
B) Stalks
C) Leaves
D) Head
  • 5. What is the general shape of Napa cabbage leaves?
A) Long and thin
B) Crinkled and folded inward
C) Smooth and flat
D) Small and round
  • 6. Bok Choy is a good source of which vitamin?
A) Vitamin C
B) Vitamin A
C) Vitamin E
D) Vitamin D
  • 7. What is the stalk texture of Gai Lan?
A) Thin and sweet
B) Thick and slightly bitter
C) Soft and spongy
D) Crisp and watery
  • 8. What is the typical color of Choy Sum's flowers?
A) White
B) Pink
C) Yellow
D) Purple
  • 9. Which cabbage is most susceptible to bolting in warm weather?
A) Choy Sum
B) Gai Lan
C) Napa Cabbage
D) Bok Choy
  • 10. What is the common growing season for Napa Cabbage?
A) Cool season
B) Year-round
C) Warm season
D) Tropical season
  • 11. How does baby Bok Choy differ from mature Bok Choy?
A) Thicker stalks
B) Bitter taste
C) Darker leaves
D) Smaller size and more tender
  • 12. Gai Lan is often prepared by which cooking method?
A) Baking
B) Raw consumption
C) Boiling for extended periods
D) Steaming or stir-frying
  • 13. What type of soil is best for growing most Chinese cabbages?
A) Dry, rocky soil
B) Well-drained, fertile soil
C) Sandy soil
D) Clay-heavy soil
  • 14. What is a common pest that affects Chinese cabbages?
A) Aphids
B) Bees
C) Ladybugs
D) Earthworms
  • 15. What is the scientific name for Bok Choy?
A) Brassica oleracea
B) Brassica napus
C) Brassica rapa subsp. pekinensis
D) Brassica rapa subsp. chinensis
  • 16. Which part of Napa cabbage is often used in Kimchi?
A) Only the stalks
B) Only the roots
C) The entire head
D) Only the leaves
  • 17. What is the primary difference between Shanghai Bok Choy and regular Bok Choy?
A) Shanghai Bok Choy is more bitter
B) Shanghai Bok Choy is larger
C) Shanghai Bok Choy has light green stalks
D) Shanghai Bok Choy has dark green leaves
  • 18. When harvesting Napa cabbage, what is a good indicator of maturity?
A) Presence of flowers
B) Leaf color
C) Stem thickness
D) Firmness of the head
  • 19. How can you prevent bolting in Choy Sum?
A) Plant in full sun
B) Plant in cooler weather
C) Fertilize heavily with nitrogen
D) Overwater regularly
  • 20. What is the best way to store Bok Choy in the refrigerator?
A) In a sealed plastic bag
B) Uncovered in the crisper drawer
C) Wrapped in a damp paper towel
D) Submerged in water
  • 21. What is a common disease that can affect Chinese cabbages?
A) Rust
B) Clubroot
C) Black Spot
D) Powdery Mildew
  • 22. Which Chinese cabbage is best suited for grilling?
A) Gai Lan
B) Choy Sum
C) Bok Choy
D) Napa Cabbage
  • 23. What characteristic makes Gai Lan different from other brassicas?
A) Edible roots.
B) A round, tightly packed head.
C) Larger, thicker leaves and stems.
D) Small, delicate leaves.
  • 24. Which Chinese cabbage is often used in stir-fries and soups?
A) All of them
B) Only Napa Cabbage
C) Only Gai Lan
D) Only Bok Choy
  • 25. What does 'bolting' refer to in the context of cabbages?
A) Leaf discoloration
B) Root rot
C) Premature flowering
D) Stunted growth
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