📘 WSET Diploma D1 — Exam Q&A
(Explained)
🍇 Grapevine Basics
Q1. What are the most important North American grape species?
Answer:
● Vitis labrusca
● Vitis riparia
● Vitis berlandieri
● Vitis rupestris
Explanation:
These species are primarily used in rootstocks due to resistance to pests like phylloxera
and adaptability to different soils.
Q2. What are the four main sections of a grapevine?
Answer:
● Main shoots
● One-year-old wood
● Permanent wood
● Roots
Explanation:
Each part has a specific role: shoots = growth, wood = structure/storage, roots = uptake.
Q3. What comprises the canopy of a vine?
Answer:
● Main shoots + stems, buds, leaves, lateral shoots, tendrils, inflorescences/grape
bunches
Explanation:
The canopy is critical for photosynthesis and fruit development.
Q4. When and where do main shoots grow?
, Answer:
● Grow in spring
● From buds formed in the previous year
Explanation:
This is key to understanding seasonal growth cycles.
Q5. Where are carbohydrates stored in a vine?
Answer:
● Stems
● Trunks
● Roots
Explanation:
These reserves support early growth after dormancy.
Q6. What does “lignify” mean?
Answer:
● Green shoots become woody and rigid (canes)
Explanation:
Important for winter survival and pruning decisions.
Q7. Where do buds form?
Answer:
● Between leaf stalk (petiole) and stem
Explanation:
This location is essential for predicting future shoot growth.
Q8. What are the two types of buds?
Answer:
● Compound buds → grow next season
(Explained)
🍇 Grapevine Basics
Q1. What are the most important North American grape species?
Answer:
● Vitis labrusca
● Vitis riparia
● Vitis berlandieri
● Vitis rupestris
Explanation:
These species are primarily used in rootstocks due to resistance to pests like phylloxera
and adaptability to different soils.
Q2. What are the four main sections of a grapevine?
Answer:
● Main shoots
● One-year-old wood
● Permanent wood
● Roots
Explanation:
Each part has a specific role: shoots = growth, wood = structure/storage, roots = uptake.
Q3. What comprises the canopy of a vine?
Answer:
● Main shoots + stems, buds, leaves, lateral shoots, tendrils, inflorescences/grape
bunches
Explanation:
The canopy is critical for photosynthesis and fruit development.
Q4. When and where do main shoots grow?
, Answer:
● Grow in spring
● From buds formed in the previous year
Explanation:
This is key to understanding seasonal growth cycles.
Q5. Where are carbohydrates stored in a vine?
Answer:
● Stems
● Trunks
● Roots
Explanation:
These reserves support early growth after dormancy.
Q6. What does “lignify” mean?
Answer:
● Green shoots become woody and rigid (canes)
Explanation:
Important for winter survival and pruning decisions.
Q7. Where do buds form?
Answer:
● Between leaf stalk (petiole) and stem
Explanation:
This location is essential for predicting future shoot growth.
Q8. What are the two types of buds?
Answer:
● Compound buds → grow next season
