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