How to Identify and Classify Grapes - Exam
  • 1. What is the primary characteristic used to initially identify grapes?
A) Berry color
B) Leaf shape
C) Root depth
D) Vine thickness
  • 2. Which grape is commonly known for its 'foxiness'?
A) Vitis labrusca
B) Vitis vinifera
C) Vitis riparia
D) Vitis aestivalis
  • 3. What is the term for the waxy coating on grape berries?
A) Lenticels
B) Farina
C) Pruinescence
D) Bloom
  • 4. Which species is responsible for the majority of wine grapes worldwide?
A) Vitis riparia
B) Vitis labrusca
C) Vitis rotundifolia
D) Vitis vinifera
  • 5. What is a key indicator when examining grape leaves for identification?
A) Petiole length only
B) Leaf size only
C) Vein color only
D) Sinus shape
  • 6. Which of these is a red grape variety?
A) Sauvignon Blanc
B) Riesling
C) Cabernet Sauvignon
D) Chardonnay
  • 7. What is the primary use of Vitis rotundifolia?
A) Table grapes only
B) Muscadine wines and fruit
C) Rootstock
D) Fine wine production
  • 8. What does 'terroir' refer to?
A) Grape fermentation process
B) Grape pruning techniques
C) Environmental factors affecting grapes
D) Grape vine root structure
  • 9. Which characteristic is NOT typically used to classify grapes?
A) Tannin structure
B) Grape variety name length
C) Acidity level
D) Berry size
  • 10. What is the purpose of using rootstock?
A) Improving fruit flavor directly
B) Increasing vine height
C) Changing berry color
D) Resistance to pests and diseases
  • 11. Which grape variety is known for its high acidity and citrus notes?
A) Zinfandel
B) Syrah
C) Merlot
D) Riesling
  • 12. What is the shape of the leaves of Vitis labrusca typically?
A) Long and narrow
B) Round and pubescent
C) Small and serrated
D) Highly lobed and glabrous
  • 13. Which grape variety is often associated with black pepper aromas?
A) Syrah/Shiraz
B) Sangiovese
C) Gamay
D) Pinot Noir
  • 14. What does 'phylloxera' refer to?
A) A root-feeding insect
B) A fungal disease
C) A viral infection
D) A nutrient deficiency
  • 15. Which is a characteristic of grapes grown in cooler climates?
A) Higher acidity
B) Higher sugar content
C) Thicker skins
D) Lower acidity
  • 16. What does 'clone' mean in viticulture?
A) Genetically identical vine
B) Vine trained in a certain way
C) Vine with a specific rootstock
D) Hybrid of two species
  • 17. Which white grape is known for its buttery flavor after malolactic fermentation?
A) Sauvignon Blanc
B) Pinot Grigio
C) Chardonnay
D) Gewürztraminer
  • 18. What is the name for the stalk that connects the grape berry to the bunch?
A) Shoot
B) Rachis
C) Pedicel
D) Petiole
  • 19. Which red grape is often described as having cherry and earthy notes?
A) Pinot Noir
B) Malbec
C) Petite Sirah
D) Cabernet Sauvignon
  • 20. What does the term 'tannins' refer to in wine?
A) Acidity levels
B) Phenolic compounds affecting structure
C) Sugar content
D) Alcohol percentage
  • 21. Which grape is often used in sparkling wines?
A) Pinot Meunier
B) Marsanne
C) Roussanne
D) Viognier
  • 22. What is the Vitis riparia species known for?
A) Its large berry size.
B) Its resistance to phylloxera.
C) Its unique flavor characteristics.
D) Its use in making high-quality table wines.
  • 23. What is the main purpose of pruning grape vines?
A) To control yield and vine shape
B) To increase sugar concentration
C) To prevent diseases
D) To change the color of grapes
  • 24. Which of these is a characteristic of a mature grape vine trunk?
A) Always perfectly straight.
B) Covered in thorns.
C) Thin, green, and flexible.
D) Thick, woody and gnarled.
  • 25. What does the term 'Brix' measure?
A) Sugar content in grapes
B) Acidity in grapes
C) Tannin concentration in grapes
D) pH level in grapes
  • 26. Which grape is commonly used in the production of Sauternes?
A) Grenache
B) Semillon
C) Albarino
D) Chenin Blanc
  • 27. What feature helps identify the difference between bunch types?
A) Color of the grapes
B) Size of the pedicel
C) Tightness of the grapes
D) Shape of the stem
  • 28. Which of the following is NOT a major consideration for grape classification?
A) Vintage
B) The vineyard owner's name
C) Geographical origin
D) Grape varietal
  • 29. What does 'Malolactic Fermentation' do?
A) Converts sugar to alcohol
B) Converts malic acid to lactic acid
C) Removes color from wine
D) Adds tannins to wine
  • 30. Which of these grapes is best known for its intense floral aroma?
A) Gewürztraminer
B) Vermentino
C) Sauvignon Blanc
D) Viognier
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