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