WSET DIPLOMA D1 CERTIFICATION
EVALUATION VERIFIED QUESTIONS AND
SOLUTIONS FULL REVIEW PACK
●● Four main sections of a grape vine
Answer: the main shoots, one-year-old wood, permanent wood and the
roots
●● What comprises the canopy of a vine?
Answer: 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?
Answer: The main shoots on the vine grow in spring from buds retained
from the previous year
●● Where are carbohydrates stored in a vine?
Answer: Stems, trunks, roots
●● Define lignify
Answer: Green shoots become woody and rigid, they are then called
canes
,●● Where do buds form?
Answer: between the leaf stalk (petiole) and the stem
●● Define the two types of buds
Answer: - 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)
- Prompt buds (form and break open same season, form lateral shoots)
●● What is the main function of lateral shoots? When are they
desirable/undesirable?
Answer: - 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)
●● What is second crop?
Answer: Lateral shoots often produce inflorescences, which can be
known as a 'second crop'
- 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 green harvesting?
,Answer: Removal of second crop during summer
●● Define one-year-old wood
Answer: the main shoots from the last growing season that were kept at
pruning, supports compound buds; cane or spur
●● Define permanent wood
Answer: woody parts of the vine that are older than one year, including
the trunk
●● where are most roots found?
Answer: top 50cm of soil
●● what distinguishes PN clone 115?
Answer: low yield, small grapes, good for high quality of red wines
●● what distinguishes PN clone 521?
Answer: high yield, bigger grapes, good for sparkling wine production
●● When is leaf fall and dormancy?
Answer: Nov-March
●● When is budburst?
, Answer: March-April
●● When is shoot and leaf growth?
Answer: March-July
●● When is flowering and fruit set?
Answer: May-June
●● When is grape development?
Answer: June-Oct
●● When is harvest?
Answer: Sept-Oct
●● How does the vine support itself during dormancy?
Answer: starch in the roots, trunk, and branches
●● Below what temp can vines be severly damaged? die?
Answer: -15C, -25C
●● What factors determine the timing of budburst?
Answer: - air temp (>10C)
EVALUATION VERIFIED QUESTIONS AND
SOLUTIONS FULL REVIEW PACK
●● Four main sections of a grape vine
Answer: the main shoots, one-year-old wood, permanent wood and the
roots
●● What comprises the canopy of a vine?
Answer: 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?
Answer: The main shoots on the vine grow in spring from buds retained
from the previous year
●● Where are carbohydrates stored in a vine?
Answer: Stems, trunks, roots
●● Define lignify
Answer: Green shoots become woody and rigid, they are then called
canes
,●● Where do buds form?
Answer: between the leaf stalk (petiole) and the stem
●● Define the two types of buds
Answer: - 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)
- Prompt buds (form and break open same season, form lateral shoots)
●● What is the main function of lateral shoots? When are they
desirable/undesirable?
Answer: - 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)
●● What is second crop?
Answer: Lateral shoots often produce inflorescences, which can be
known as a 'second crop'
- 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 green harvesting?
,Answer: Removal of second crop during summer
●● Define one-year-old wood
Answer: the main shoots from the last growing season that were kept at
pruning, supports compound buds; cane or spur
●● Define permanent wood
Answer: woody parts of the vine that are older than one year, including
the trunk
●● where are most roots found?
Answer: top 50cm of soil
●● what distinguishes PN clone 115?
Answer: low yield, small grapes, good for high quality of red wines
●● what distinguishes PN clone 521?
Answer: high yield, bigger grapes, good for sparkling wine production
●● When is leaf fall and dormancy?
Answer: Nov-March
●● When is budburst?
, Answer: March-April
●● When is shoot and leaf growth?
Answer: March-July
●● When is flowering and fruit set?
Answer: May-June
●● When is grape development?
Answer: June-Oct
●● When is harvest?
Answer: Sept-Oct
●● How does the vine support itself during dormancy?
Answer: starch in the roots, trunk, and branches
●● Below what temp can vines be severly damaged? die?
Answer: -15C, -25C
●● What factors determine the timing of budburst?
Answer: - air temp (>10C)
