How to Identify and Classify Sorb Apples
  • 1. What is the genus of Sorb apples (Sorbus)?
A) Sorbus
B) Malus
C) Pyrus
D) Crataegus
  • 2. Which of the following is a key characteristic of Sorbus leaves?
A) Needle-like
B) Simple and lobed
C) Pinnately compound
D) Palmately compound
  • 3. What is the fruit of a Sorbus tree typically called?
A) Berry
B) Capsule
C) Pome
D) Drupe
  • 4. What color are Sorbus berries typically?
A) Blue or purple
B) Red, orange, or yellow
C) Black
D) Green
  • 5. Which feature is MOST helpful in distinguishing between different Sorbus species?
A) Flower color
B) Leaflet shape and number
C) Tree height
D) Bark texture
  • 6. What is the typical habitat of many Sorbus species?
A) Tropical rainforests
B) Aquatic environments
C) Woodland edges and hedgerows
D) Deserts
  • 7. Are Sorbus berries typically considered palatable raw?
A) Yes, but only when unripe
B) No, often astringent
C) Yes, very sweet
D) Only in specific cultivars
  • 8. Which is a common use for Sorbus berries?
A) Construction materials
B) Salad dressings
C) Animal feed only
D) Jams and jellies
  • 9. What type of flowering does Sorbus exhibit?
A) Catkins
B) Brightly colored, showy blooms
C) Clusters of small, white flowers
D) Large, solitary flowers
  • 10. What is the bark texture of a mature Sorbus tree typically like?
A) Spiny
B) Smooth and grey, becoming fissured with age
C) Rough and deeply furrowed
D) Papery and peeling
  • 11. Which of these is NOT a common Sorbus species?
A) Sorbus domestica (Service Tree)
B) Sorbus aria (Whitebeam)
C) Sorbus aucuparia (Rowan)
D) Sorbus pinea (Pine Apple)
  • 12. What shape are the leaflets of Sorbus aucuparia (Rowan) typically?
A) Lanceolate
B) Heart-shaped
C) Ovate
D) Round
  • 13. What is a distinguishing feature of Sorbus aria (Whitebeam) leaves?
A) Toothed edges
B) Glossy green surface
C) Prominent veins
D) Silvery-white underside
  • 14. What is the term used to describe the fuzzy covering on some Sorbus leaves?
A) Scabrous
B) Tomentose
C) Pubescent
D) Glabrous
  • 15. How are Sorbus seeds dispersed?
A) By water
B) By birds and other animals
C) By explosive dispersal
D) By wind
  • 16. Which season do Sorbus trees typically flower in?
A) Summer
B) Autumn
C) Winter
D) Spring
  • 17. Which of the following is a hybrid Sorbus species?
A) Sorbus commixta
B) Sorbus ulleungensis
C) Sorbus x thuringiaca
D) Sorbus americana
  • 18. What does 'aucuparia' in Sorbus aucuparia refer to?
A) Berry color
B) Medicinal properties
C) Attracting birds
D) Leaf shape
  • 19. What does the term 'pinnate' refer to regarding Sorbus leaves?
A) Leaf color
B) Leaf texture
C) Arrangement of leaflets on either side of a stem
D) Leaf size
  • 20. What is a key difference between Sorbus aria and Sorbus aucuparia in terms of leaf complexity?
A) Sorbus aria has compound leaves; Sorbus aucuparia has simple leaves.
B) Sorbus aria has simple leaves; Sorbus aucuparia has compound leaves.
C) Both have simple leaves.
D) Both have compound leaves.
  • 21. What is a potential pest that can affect Sorbus trees?
A) Beavers
B) Aphids
C) Ladybugs
D) Earthworms
  • 22. What is the geographic origin of Sorbus trees?
A) Exclusively found in Australia
B) Mostly native to Africa
C) Exclusively found in South America
D) Mostly native to the Northern Hemisphere
  • 23. What is the typical lifespan of a Sorbus tree?
A) 1000+ years
B) 10-20 years
C) 200-300 years
D) 50-100 years
  • 24. Which characteristic of Sorbus berries makes them useful for wildlife?
A) High in protein
B) High in fat
C) High in Vitamin C
D) High in calcium
  • 25. What is one way to prepare Sorbus berries to reduce astringency?
A) Drying
B) Freezing
C) Salting
D) Boiling
  • 26. What is the botanical term for the arrangement of flowers in a cluster, common in Sorbus?
A) Raceme
B) Spike
C) Corymb
D) Umbel
  • 27. Which Sorbus species is known for its larger, pear-shaped fruits?
A) Sorbus domestica
B) Sorbus aria
C) Sorbus torminalis
D) Sorbus aucuparia
  • 28. What type of soil do Sorbus trees generally prefer?
A) Waterlogged
B) Sandy
C) Well-drained
D) Clay
  • 29. What is a traditional medicinal use of Sorbus berries?
A) Relieving headaches
B) Lowering blood pressure
C) Treating scurvy
D) Curing insomnia
  • 30. What is the primary identifying characteristic when young?
A) Height
B) Berries
C) Bark
D) Buds
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