How to Identify and Classify Yardlong Beans
  • 1. What family do yardlong beans belong to?
A) Brassicaceae
B) Solanaceae
C) Cucurbitaceae
D) Fabaceae
  • 2. What is the scientific name of yardlong beans?
A) Phaseolus vulgaris
B) Glycine max
C) Vigna unguiculata subsp. sesquipedalis
D) Pisum sativum
  • 3. Yardlong beans are most closely related to what other common bean?
A) Green beans
B) Cowpeas
C) Lima beans
D) Kidney beans
  • 4. What is the defining characteristic of yardlong beans?
A) Round, small pods
B) Exceptionally long pods
C) Spotted pods
D) Purple foliage
  • 5. How long are yardlong bean pods typically?
A) 1-2 m
B) 5-10 cm
C) 10-20 cm
D) 30-90 cm
  • 6. What is the typical color of yardlong bean flowers?
A) Yellow
B) White
C) Bright red
D) Pale purple or lavender
  • 7. What is the typical color of yardlong bean seeds?
A) Always purple
B) Always white
C) Variable; often brown, red, or black
D) Always green
  • 8. Are yardlong beans a type of legume?
A) Only when dried
B) Yes
C) Sometimes
D) No
  • 9. What type of growth habit do yardlong beans exhibit?
A) Ground cover
B) Tree
C) Bush
D) Climbing vine
  • 10. What is the best way to support yardlong bean plants?
A) Trellis or stakes
B) Letting them grow on the ground
C) Planting them in a pot
D) Pruning regularly
  • 11. At what stage are yardlong beans typically harvested?
A) When the pods are long and tender
B) When the flowers are in full bloom
C) When the plant is mature
D) When the pods are dry and brittle
  • 12. What is a common culinary use for yardlong beans?
A) Making jam
B) Animal feed only
C) Stir-fries
D) Dyeing fabrics
  • 13. Which climate is most suitable for growing yardlong beans?
A) High altitude
B) Temperate with mild winters
C) Warm and humid
D) Cold and dry
  • 14. What soil type is ideal for yardlong bean cultivation?
A) Clay-rich soil
B) Acidic soil
C) Sandy, infertile soil
D) Well-drained, fertile soil
  • 15. What is a common pest that affects yardlong beans?
A) Bees
B) Earthworms
C) Aphids
D) Ladybugs
  • 16. What is a common disease that affects yardlong beans?
A) Leaf curl
B) Tomato blight
C) Powdery mildew
D) Root rot
  • 17. How are yardlong beans typically propagated?
A) Grafting
B) Cuttings
C) Layering
D) Seeds
  • 18. Yardlong beans are a good source of which nutrient?
A) Calcium
B) Iron
C) Vitamin D
D) Vitamin C
  • 19. How does the taste of yardlong beans compare to other common beans?
A) Bitter and unpleasant
B) Sweeter than other beans
C) Exactly the same as green beans
D) Slightly different, sometimes described as more earthy
  • 20. In which part of the world are yardlong beans most commonly cultivated?
A) Europe
B) North America
C) Southeast Asia
D) South America
  • 21. What distinguishes yardlong beans from asparagus beans?
A) They are the same thing.
B) Asparagus beans are always purple.
C) Yardlong beans require more water.
D) Asparagus beans are always bush beans.
  • 22. What is a good companion plant for yardlong beans?
A) Rosemary
B) Fennel
C) Onions
D) Corn
  • 23. What part of the yardlong bean plant is typically eaten?
A) The roots
B) The immature pods
C) The mature seeds only
D) The leaves
  • 24. Why are yardlong beans often called 'asparagus beans'?
A) Because asparagus is used as fertilizer when growing them
B) Because of their similar taste and texture when cooked
C) Because they are always grown near asparagus
D) Because they look exactly like asparagus plants
  • 25. How does the cooking time of yardlong beans compare to green beans?
A) Much shorter
B) They don't need to be cooked at all
C) Similar, but may require slightly longer
D) Significantly longer
  • 26. What is a key factor in preventing yardlong bean pods from becoming tough?
A) Exposing them to full sun
B) Fertilizing them heavily
C) Watering them excessively
D) Harvesting them while they are still young and tender
  • 27. Are yardlong beans frost-tolerant?
A) Moderately frost-tolerant
B) Only with protection
C) Yes, very frost-tolerant
D) No
  • 28. What is the average seed germination rate for yardlong beans, under optimal conditions?
A) 40-50%
B) 10-20%
C) Almost 100%
D) 70-90%
  • 29. Compared to bush beans, how much space do yardlong beans typically need?
A) Less space as they grow vertically
B) They can be grown in small containers
C) About the same amount of space
D) More space due to their vining habit
  • 30. Which of the following is NOT a common name for yardlong beans?
A) Broad Bean
B) Chinese Long Bean
C) Snake Bean
D) Asparagus Bean
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