How to Identify and Classify Plums - Exam
  • 1. What is the primary fruit type of all plums?
A) Aggregate Fruit
B) Pome
C) Drupe
D) Berry
  • 2. Which characteristic is MOST important for initial plum identification?
A) Branch thickness
B) Leaf shape
C) Pit size
D) Skin color
  • 3. Japanese plums are scientifically classified under which species?
A) Prunus americana
B) Prunus salicina
C) Prunus cerasifera
D) Prunus domestica
  • 4. European plums are scientifically classified under which species?
A) Prunus salicina
B) Prunus cerasifera
C) Prunus domestica
D) Prunus americana
  • 5. Which plum species is known for its small size and often used for jams?
A) Prunus salicina
B) Prunus domestica
C) Prunus persica
D) Prunus americana
  • 6. What is a distinguishing characteristic of 'greengage' plums?
A) Very large size
B) Green skin when ripe
C) Red flesh
D) Freestone pit
  • 7. Which plum type is typically used for drying into prunes?
A) European
B) Japanese
C) Cherry
D) American
  • 8. A plum with a pointed end is most likely a...
A) European plum
B) Greengage plum
C) Japanese plum
D) Damson plum
  • 9. What pit type is most common in Japanese plums?
A) Freestone
B) Semi-freestone
C) Clingstone
D) No pit
  • 10. What pit type is most common in European plums?
A) No pit
B) Clingstone
C) Freestone
D) Semi-freestone
  • 11. A 'bloom' on a plum refers to what?
A) Waxy coating on skin
B) Fungal growth
C) Insect infestation
D) Sugar crystals
  • 12. Which plum species is also known as the 'cherry plum'?
A) Prunus salicina
B) Prunus americana
C) Prunus cerasifera
D) Prunus domestica
  • 13. The flavor profile of most European plums is generally...
A) More tart and acidic
B) Similar to cherries
C) Sweeter and less tart
D) Bland
  • 14. The flavor profile of most Japanese plums is generally...
A) Mild and sweet
B) Similar to apples
C) Bland
D) Tart and complex
  • 15. What leaf characteristic helps identify plum trees?
A) Compound leaves
B) Serrations along the leaf edge
C) Needle-like leaves
D) Smooth leaf edges
  • 16. Which ripening time best describes European plums?
A) Late summer to fall
B) Early spring
C) Winter
D) Mid-summer
  • 17. Which ripening time best describes Japanese plums?
A) Early to mid-summer
B) Winter
C) Late summer to fall
D) Late fall
  • 18. What color is the flesh of 'Santa Rosa' plums?
A) Purple
B) Yellow
C) Amber to red
D) Green
  • 19. Which factor affects plum size most significantly?
A) Tree age
B) Rainfall amount
C) Cultivar
D) Soil type
  • 20. How does chilling requirement affect plum cultivar selection?
A) Determines the size of the fruit
B) Determines the skin color
C) Determines the sweetness of the fruit
D) Determines suitability for the climate
  • 21. The shape of European plums is generally...
A) Pear-shaped
B) Round
C) Oval
D) Heart-shaped
  • 22. What does 'self-fertile' mean in the context of plum trees?
A) Needs no water
B) Requires a separate pollinator
C) Grows in very poor soil
D) Can pollinate itself
  • 23. A small, tart plum with dark blue skin is likely a...
A) Santa Rosa
B) Elephant Heart
C) Damson
D) Greengage
  • 24. Which tool is best for determining the sugar content of a plum?
A) Soil pH meter
B) Refractometer
C) Tape measure
D) Microscope
  • 25. What does 'precocity' refer to in plum trees?
A) Rapid growth rate
B) Tolerance to drought
C) Resistance to disease
D) Bearing fruit early in life
  • 26. Compared to Japanese plums, European plum trees generally...
A) Are more cold hardy
B) Bear fruit faster
C) Require less pruning
D) Have a longer lifespan
  • 27. What is the most common use of myrobalan plums?
A) Drying
B) Jam making
C) Fresh eating
D) Rootstock for grafting
  • 28. A large plum with a dark purple skin and red flesh is likely a...
A) Damson plum
B) Santa Rosa plum
C) Elephant Heart plum
D) Stanley plum
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