WSET Diploma D1 Exam Questions With
Correct Answers
Most important N American grape species
| | | | |
Vitis labrusca, Vitis riparia, Vitis berlandieri and Vitis rupestris
| | | | | | | |
Four main sections of a grape vine
| | | | | |
the main shoots, one-year-old wood, permanent wood and the roots
| | | | | | | | |
What comprises the canopy of a vine?
| | | | | |
The main shoots and all of their major structures - stem, buds, leaves, lateral
| | | | | | | | | | | | | |
shoots, tendrils and inflorescences/grape bunches
| | | |
What do the main shoots grow from, and when?
| | | | | | | |
The main shoots on the vine grow in spring from buds retained from the previous
| | | | | | | | | | | | | |
year
|
Where are carbohydrates stored in a vine?
| | | | | |
,Stems, trunks, roots | |
Define lignify |
Green shoots become woody and rigid, they are then called canes
| | | | | | | | | |
Where do buds form? | | |
between the leaf stalk (petiole) and the stem
| | | | | | |
Define the two types of buds
| | | | |
- Compound buds (form in one growing season and break open the following
| | | | | | | | | | | | |
growing season, producing main shoots; typically a primary, secondary, and
| | | | | | | | | |
maybe tertiary) |
- Prompt buds (form and break open same season, form lateral shoots)
| | | | | | | | | | |
What is the main function of lateral shoots? When are they
| | | | | | | | | |
desirable/undesirable?
|
- to allow the plant to carry on growing if the tip of the main shoot has been
| | | | | | | | | | | | | | | | | |
damaged or eaten | |
- can provide an additional source of leaves for photosynthesis (useful if the
| | | | | | | | | | | | |
laterals are near the ends of the main shoots)
| | | | | | | |
,- Growth of laterals nearer the base of the main shoot can be undesirable as they
| | | | | | | | | | | | | | |
|impede air flow and can shade the fruit too much
| | | | | | | | |
What is second crop?
| | |
Lateral shoots often produce inflorescences, which can be known as a 'second
| | | | | | | | | | | |
crop'
What is green harvesting?
| | |
Removal of second crop during summer
| | | | |
Define one-year-old wood
| |
the main shoots from the last growing season that were kept at pruning, supports
| | | | | | | | | | | | |
compound buds; cane or spur
| | | | |
Define permanent wood
| |
woody parts of the vine that are older than one year, including the trunk
| | | | | | | | | | | | |
, where are most roots found?
| | | |
top 50cm of soil
| | |
what distinguishes PN clone 115?
| | | |
low Y, small grapes, good for high Q red wines
| | | | | | | | |
what distinguishes PN clone 521?
| | | |
high Y, bigger grapes, good for sparkling wine production
| | | | | | | |
When is leaf fall and dormancy?
| | | | |
Nov-March
When is budburst?
| |
March-April
When is shoot and leaf growth?
| | | | |
Correct Answers
Most important N American grape species
| | | | |
Vitis labrusca, Vitis riparia, Vitis berlandieri and Vitis rupestris
| | | | | | | |
Four main sections of a grape vine
| | | | | |
the main shoots, one-year-old wood, permanent wood and the roots
| | | | | | | | |
What comprises the canopy of a vine?
| | | | | |
The main shoots and all of their major structures - stem, buds, leaves, lateral
| | | | | | | | | | | | | |
shoots, tendrils and inflorescences/grape bunches
| | | |
What do the main shoots grow from, and when?
| | | | | | | |
The main shoots on the vine grow in spring from buds retained from the previous
| | | | | | | | | | | | | |
year
|
Where are carbohydrates stored in a vine?
| | | | | |
,Stems, trunks, roots | |
Define lignify |
Green shoots become woody and rigid, they are then called canes
| | | | | | | | | |
Where do buds form? | | |
between the leaf stalk (petiole) and the stem
| | | | | | |
Define the two types of buds
| | | | |
- Compound buds (form in one growing season and break open the following
| | | | | | | | | | | | |
growing season, producing main shoots; typically a primary, secondary, and
| | | | | | | | | |
maybe tertiary) |
- Prompt buds (form and break open same season, form lateral shoots)
| | | | | | | | | | |
What is the main function of lateral shoots? When are they
| | | | | | | | | |
desirable/undesirable?
|
- to allow the plant to carry on growing if the tip of the main shoot has been
| | | | | | | | | | | | | | | | | |
damaged or eaten | |
- can provide an additional source of leaves for photosynthesis (useful if the
| | | | | | | | | | | | |
laterals are near the ends of the main shoots)
| | | | | | | |
,- Growth of laterals nearer the base of the main shoot can be undesirable as they
| | | | | | | | | | | | | | |
|impede air flow and can shade the fruit too much
| | | | | | | | |
What is second crop?
| | |
Lateral shoots often produce inflorescences, which can be known as a 'second
| | | | | | | | | | | |
crop'
What is green harvesting?
| | |
Removal of second crop during summer
| | | | |
Define one-year-old wood
| |
the main shoots from the last growing season that were kept at pruning, supports
| | | | | | | | | | | | |
compound buds; cane or spur
| | | | |
Define permanent wood
| |
woody parts of the vine that are older than one year, including the trunk
| | | | | | | | | | | | |
, where are most roots found?
| | | |
top 50cm of soil
| | |
what distinguishes PN clone 115?
| | | |
low Y, small grapes, good for high Q red wines
| | | | | | | | |
what distinguishes PN clone 521?
| | | |
high Y, bigger grapes, good for sparkling wine production
| | | | | | | |
When is leaf fall and dormancy?
| | | | |
Nov-March
When is budburst?
| |
March-April
When is shoot and leaf growth?
| | | | |
