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