How to Identify and Classify Sea Buckthorns
  • 1. What is the primary characteristic that identifies sea buckthorn?
A) Thorny branches and silver-green leaves
B) Thick, waxy leaves
C) Large, colorful flowers
D) Smooth, gray bark
  • 2. Sea buckthorn fruits are typically what color?
A) Orange or yellow
B) Blue or purple
C) Green
D) Red
  • 3. The leaf shape of sea buckthorn is best described as:
A) Round
B) Oval
C) Lanceolate
D) Heart-shaped
  • 4. Sea buckthorn is known for being a good source of which vitamin?
A) Vitamin B12
B) Vitamin D
C) Vitamin K
D) Vitamin C
  • 5. Sea buckthorn typically thrives in what type of environment?
A) Sandy or gravelly soil
B) Clay-rich soil
C) Dense forests
D) Swamps
  • 6. What is the typical growth habit of sea buckthorn?
A) Ground cover
B) Vine
C) Large, towering tree
D) Shrub or small tree
  • 7. Which part of the sea buckthorn plant is often used for medicinal purposes?
A) Bark
B) Leaves only
C) Fruits and oil
D) Roots
  • 8. Sea buckthorn is native to which regions?
A) North America and Australia
B) South America and Africa
C) Europe and Asia
D) Antarctica
  • 9. What type of plant is sea buckthorn regarding its sex?
A) Dioecious
B) Monoecious
C) Hermaphroditic
D) Asexual
  • 10. Why is it important to have both male and female sea buckthorn plants?
A) For disease resistance
B) For leaf growth
C) For root development
D) For fruit production
  • 11. The small dots on the leaves of sea buckthorn are called:
A) Veins
B) Pores
C) Stomata
D) Scales or hairs
  • 12. What is the role of nitrogen-fixing bacteria in sea buckthorn's root nodules?
A) Store water for the plant
B) Protect the roots from pests
C) Convert nitrogen from the air into a usable form for the plant
D) Transport nutrients to the leaves
  • 13. The fruit of sea buckthorn is classified as what type of fruit?
A) Pome
B) Drupe
C) Capsule
D) Berry
  • 14. What is the scientific name of Sea Buckthorn?
A) Sorbus aucuparia
B) Vaccinium myrtillus
C) Rubus idaeus
D) Hippophae rhamnoides
  • 15. How are sea buckthorn plants typically propagated?
A) Cuttings or seeds
B) Grafting only
C) Budding only
D) Layering only
  • 16. What is a common use of sea buckthorn oil?
A) Skin care products
B) Food preservative
C) Fuel additive
D) Industrial lubricant
  • 17. Which of these is a characteristic of sea buckthorn thorns?
A) Rounded and blunt
B) Absent on mature plants
C) Sharp and rigid
D) Soft and pliable
  • 18. What is the meaning of 'Hippophae' in the scientific name Hippophae rhamnoides?
A) Thorny bush
B) Shining horse
C) Silver leaf
D) Orange fruit
  • 19. Which environmental condition does sea buckthorn tolerate well?
A) Waterlogging
B) High humidity
C) Shade
D) Salinity
  • 20. What is a common method for harvesting sea buckthorn berries?
A) Cutting branches and freezing them
B) Using a vacuum device
C) Shaking the tree
D) Hand picking individual berries
  • 21. Sea buckthorn is sometimes used in land reclamation because it:
A) Depletes nutrients
B) Stabilizes soil
C) Attracts pests
D) Requires fertile soil
  • 22. What is a potential drawback of planting sea buckthorn?
A) High water requirements
B) Slow growth rate
C) Susceptibility to fungal diseases
D) Invasive tendencies
  • 23. Which feature helps distinguish different cultivars of sea buckthorn?
A) Thorn length
B) Bark color
C) Leaf size
D) Fruit size and shape
  • 24. What is the approximate lifespan of a sea buckthorn plant?
A) 10-20 years
B) 30-40 years
C) 100+ years
D) 60-70 years
  • 25. The silver appearance of sea buckthorn leaves is due to:
A) Chlorophyll deficiency
B) Tiny scales reflecting light
C) Presence of fungal spores
D) A waxy coating
  • 26. Sea buckthorn berries are often used in which type of product?
A) Textile dyes
B) Juices and jams
C) Fertilizers
D) Building materials
  • 27. What type of root system does sea buckthorn have?
A) Taproot only
B) Shallow and compact
C) Fibrous and weak
D) Extensive and deep
  • 28. What is the benefit of sea buckthorn's ability to fix nitrogen?
A) Increases pest resistance
B) Improves soil fertility
C) Reduces water consumption
D) Enhances fruit flavor
  • 29. How does sea buckthorn contribute to biodiversity?
A) Suppresses other plant growth
B) Acidifies the soil
C) Provides habitat for wildlife
D) Repels insects
  • 30. Which geographical feature is often associated with sea buckthorn growth?
A) High mountains
B) Tropical rainforests
C) Coastal areas
D) Deserts
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