WSET DIPLOMA D1 - CHAPTER 1 EXAM
QUESTIONS AND ANSWERS. VERIFIED
2025/2026.
Number of known grape varieties in the world - ANS Over 1,000
Majority of global grape varieties belong to what species - ANS Vitis Vinifera
Vitis Vinifera is indigenous to where - ANS Eurasia
What grape varietal species is indigenous to Eurasia - ANS Vitis Vinifera
Where are North American grape species used for production? - ANS New York state
What is the main function of N. American grape species globally? - ANS Rootstocks for
grafting vitis vinifera onto
What are the most important N. American grape species (4)? - ANS Vitis Labrusca
Vitis Riparia
Vitis Berlandieri
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Vitis Rupestris
Anatomy of the Vine (4) - ANS Main shoots
One-year-old wood
Permanent wood
Roots
What are the major structures of the main shoots - ANS Stem
bud
leaves
lateral shoots
tendrils
Inflorescences / grape bunches
What does the canopy refer to? - ANS Main shoots and their major structures
Where do main shoots grow from? - ANS Buds retain from prior year
What does the stem do for its structures (3)? - ANS Structure components attach to
Transports water and solutes to/from structures
Store of carbohydrates
What are in the solutes in stems? - ANS Sugars and minerals
What are nodes on a stem? - ANS Swellings where structures are attached
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS. VERIFIED
2025/2026.
Number of known grape varieties in the world - ANS Over 1,000
Majority of global grape varieties belong to what species - ANS Vitis Vinifera
Vitis Vinifera is indigenous to where - ANS Eurasia
What grape varietal species is indigenous to Eurasia - ANS Vitis Vinifera
Where are North American grape species used for production? - ANS New York state
What is the main function of N. American grape species globally? - ANS Rootstocks for
grafting vitis vinifera onto
What are the most important N. American grape species (4)? - ANS Vitis Labrusca
Vitis Riparia
Vitis Berlandieri
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Vitis Rupestris
Anatomy of the Vine (4) - ANS Main shoots
One-year-old wood
Permanent wood
Roots
What are the major structures of the main shoots - ANS Stem
bud
leaves
lateral shoots
tendrils
Inflorescences / grape bunches
What does the canopy refer to? - ANS Main shoots and their major structures
Where do main shoots grow from? - ANS Buds retain from prior year
What does the stem do for its structures (3)? - ANS Structure components attach to
Transports water and solutes to/from structures
Store of carbohydrates
What are in the solutes in stems? - ANS Sugars and minerals
What are nodes on a stem? - ANS Swellings where structures are attached
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
