WSET DIPLOMA D1 - CHAPTER 1 EXAM QUESTIONS AND ANSWERS. VERIFIED 2025/2026.

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


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, 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


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