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