WSET Diploma D1 - Chapter 1 questions and answers
2026\2027 A+ Grade
Number of known grape varieties in the world - correct answer Over 1,000
Majority of global grape varieties belong to what species - correct answer Vitis Vinifera
Vitis Vinifera is indigenous to where - correct answer Eurasia
What grape varietal species is indigenous to Eurasia - correct answer Vitis Vinifera
Where are North American grape species used for production? - correct answer New York state
What is the main function of N. American grape species globally? - correct answer Rootstocks for
grafting vitis vinifera onto
What are the most important N. American grape species (4)? - correct answer Vitis Labrusca
Vitis Riparia
Vitis Berlandieri
Vitis Rupestris
Anatomy of the Vine (4) - correct answer Main shoots
One-year-old wood
Permanent wood
Roots
What are the major structures of the main shoots - correct answer Stem
bud
, leaves
lateral shoots
tendrils
Inflorescences / grape bunches
What does the canopy refer to? - correct answer Main shoots and their major structures
Where do main shoots grow from? - correct answer Buds retain from prior year
What does the stem do for its structures (3)? - correct answer Structure components attach to
Transports water and solutes to/from structures
Store of carbohydrates
What are in the solutes in stems? - correct answer Sugars and minerals
What are nodes on a stem? - correct answer Swellings where structures are attached
What are internodes? - correct answer Length of stem between nodes
What does lignify mean? - correct answer Green shoots become woody, rigid, and turn brown
What is a cane? - correct answer A lignified shoot
What are the two types of buds? - correct answer Compound/latent
Prompt
What does a bud contain? - correct answer All the green parts; stem, buds, tendrils, leaves,
inforescences
2026\2027 A+ Grade
Number of known grape varieties in the world - correct answer Over 1,000
Majority of global grape varieties belong to what species - correct answer Vitis Vinifera
Vitis Vinifera is indigenous to where - correct answer Eurasia
What grape varietal species is indigenous to Eurasia - correct answer Vitis Vinifera
Where are North American grape species used for production? - correct answer New York state
What is the main function of N. American grape species globally? - correct answer Rootstocks for
grafting vitis vinifera onto
What are the most important N. American grape species (4)? - correct answer Vitis Labrusca
Vitis Riparia
Vitis Berlandieri
Vitis Rupestris
Anatomy of the Vine (4) - correct answer Main shoots
One-year-old wood
Permanent wood
Roots
What are the major structures of the main shoots - correct answer Stem
bud
, leaves
lateral shoots
tendrils
Inflorescences / grape bunches
What does the canopy refer to? - correct answer Main shoots and their major structures
Where do main shoots grow from? - correct answer Buds retain from prior year
What does the stem do for its structures (3)? - correct answer Structure components attach to
Transports water and solutes to/from structures
Store of carbohydrates
What are in the solutes in stems? - correct answer Sugars and minerals
What are nodes on a stem? - correct answer Swellings where structures are attached
What are internodes? - correct answer Length of stem between nodes
What does lignify mean? - correct answer Green shoots become woody, rigid, and turn brown
What is a cane? - correct answer A lignified shoot
What are the two types of buds? - correct answer Compound/latent
Prompt
What does a bud contain? - correct answer All the green parts; stem, buds, tendrils, leaves,
inforescences
