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