WSET Diploma D1 / WSET
Diploma D1 QUESTIONS AND
CORRECT DETAILED
ANSWERS WITH RATIONALES
(VERIFIED ANSWERS)
|ALREADY GRADED A+
,Most important North American grape species - CORRECT
ANSWER-Vitis labrusca, Vitis riparia, Vitis berlandieri and
Vitis rupestris
Four main sections of a grape vine - CORRECT ANSWER-the
main shoots, one-year-old wood, permanent wood and the
roots
What comprises the canopy of a vine? - CORRECT 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? - CORRECT
ANSWER-The main shoots on the vine grow in spring from
buds retained from the previous year
Where are carbohydrates stored in a vine? - CORRECT
ANSWER-Stems, trunks, roots
Define lignify - CORRECT ANSWER-Green shoots become
woody and rigid, they are then called canes
,Where do buds form? - CORRECT ANSWER-between the leaf
stalk (petiole) and the stem
, Define the two types of buds - CORRECT 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? - CORRECT 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? - CORRECT 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
Diploma D1 QUESTIONS AND
CORRECT DETAILED
ANSWERS WITH RATIONALES
(VERIFIED ANSWERS)
|ALREADY GRADED A+
,Most important North American grape species - CORRECT
ANSWER-Vitis labrusca, Vitis riparia, Vitis berlandieri and
Vitis rupestris
Four main sections of a grape vine - CORRECT ANSWER-the
main shoots, one-year-old wood, permanent wood and the
roots
What comprises the canopy of a vine? - CORRECT 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? - CORRECT
ANSWER-The main shoots on the vine grow in spring from
buds retained from the previous year
Where are carbohydrates stored in a vine? - CORRECT
ANSWER-Stems, trunks, roots
Define lignify - CORRECT ANSWER-Green shoots become
woody and rigid, they are then called canes
,Where do buds form? - CORRECT ANSWER-between the leaf
stalk (petiole) and the stem
, Define the two types of buds - CORRECT 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? - CORRECT 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? - CORRECT 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
