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