WSET DIPLOMA D1 EXAM 2025/2026 ACTUAL COMPLETE
ALL REAL EXAM QUESTIONS AND CORRECT ANSWERS |
VERIFIED ANSWERS | ALREADY GRADED A+ | LATEST
EXAM .
what is stage 4 of grape growth and ripening? - ANSWER-extra
ripening
what happens during stage 4 of grape growth and ripening? -
ANSWER-- No more sugar or water are imported to the grape
by the phloem at this stage, but water loss in the grape
through grape transpiration means that sugars are
concentrated
- Extra-ripe aromas can also develop
what are typical fermentation temperature for white wines, and
what styles do they produce? - ANSWER-- ~15C:
fruity/aromatic wines
~17-25C: less fruity wines
what is eutypa dieback? what does it do? how is it spread?
how does it infect?
,- ANSWER-- aka Dead Arm
- fungal trunk disease that leads to rotten wood in vines and
can affect whole vineyards
- reduces yields significantly and kills vines over a ten-year
period if not tackled
- spread by wind over long distances
- through pruning wounds in moderate temperatures and
especially during rain
how can eutypa dieback be managed? - ANSWER-- pruning
late and applying fungicide to pruning wounds can be
effective
- cut back affected trunks 5-10 cm beyond the visible
symptoms and treated with fungicide - Bacillus subtilis
what is pierce's disease? how does it infect? how is it
spread? where did it originate? - ANSWER-- bacterial
disease that quickly kills vines - bacterium lives in the sap
channels of vines, which it clogs, leading to shrivelling,
dropping leaves and the death of the vine between one and
five years
- bacterium lives in the sap channels of vines, which it clogs,
leading to shrivelling, dropping leaves and the death of the
vine between one and five years
- American continent
,how can Pierce's disease be managed? - ANSWER-control is
by reducing the number of the vector (removing vines close to
rivers, chemical insecticides, introducing a species of wasp
that feeds on the eggs of sharpshooters
what is fanleaf virus? how was the disease spread
enormously? - ANSWER-- a long-standing group of diseases
(also called Fanleaf degeneration) that is now found around
the world- American continent
- grafted vines following phylloxera and the inadvertent use of
infected plant material; also spread by dagger nematodes
how is leafroll virus spread? what does it do? - ANSWER--
grafting and mealy bugs
- slows shoot & root growth
what is the typical Brix range at harvest for still dry wines? -
ANSWER-19-25 degrees
what are advantages of machine harvesting? - ANSWER--
significantly faster and substantially cheaper
- avoids issues of the lack of availability of, and possible
unreliability among, casual workers
- grapes can be harvested at night and be kept up to 15°C /
59°F cooler - timing of the harvest can wait until the desired
, level of ripeness has been achieved and then carried out
quickly
what are disadvantages of machine harvesting? - ANSWER--
less gentle than hand-harvesting
- not economic or practical for small-scale vineyards
- may be unsuitable for grape growers that have several
different varieties ripening at different times in the same plot
- not suitable for vineyards on steep slopes or with limited
access
- competition for the rental of the machine at the best moment
for harvest
what are the components of wine? - ANSWER-- water (~85%)
- alcohol (ethanol, higher alcohols)
- acids (tartaric, malic, lactic, acetic)
- aromatics
- RS
- glycerol
- phenolics (anthocyanins, tannins)
why are TA and pH not exactly correlated? - ANSWER-
buffering effect of other molecules
what is the typical range of TA in a wine? - ANSWER-5.5-8.5 g/l
ALL REAL EXAM QUESTIONS AND CORRECT ANSWERS |
VERIFIED ANSWERS | ALREADY GRADED A+ | LATEST
EXAM .
what is stage 4 of grape growth and ripening? - ANSWER-extra
ripening
what happens during stage 4 of grape growth and ripening? -
ANSWER-- No more sugar or water are imported to the grape
by the phloem at this stage, but water loss in the grape
through grape transpiration means that sugars are
concentrated
- Extra-ripe aromas can also develop
what are typical fermentation temperature for white wines, and
what styles do they produce? - ANSWER-- ~15C:
fruity/aromatic wines
~17-25C: less fruity wines
what is eutypa dieback? what does it do? how is it spread?
how does it infect?
,- ANSWER-- aka Dead Arm
- fungal trunk disease that leads to rotten wood in vines and
can affect whole vineyards
- reduces yields significantly and kills vines over a ten-year
period if not tackled
- spread by wind over long distances
- through pruning wounds in moderate temperatures and
especially during rain
how can eutypa dieback be managed? - ANSWER-- pruning
late and applying fungicide to pruning wounds can be
effective
- cut back affected trunks 5-10 cm beyond the visible
symptoms and treated with fungicide - Bacillus subtilis
what is pierce's disease? how does it infect? how is it
spread? where did it originate? - ANSWER-- bacterial
disease that quickly kills vines - bacterium lives in the sap
channels of vines, which it clogs, leading to shrivelling,
dropping leaves and the death of the vine between one and
five years
- bacterium lives in the sap channels of vines, which it clogs,
leading to shrivelling, dropping leaves and the death of the
vine between one and five years
- American continent
,how can Pierce's disease be managed? - ANSWER-control is
by reducing the number of the vector (removing vines close to
rivers, chemical insecticides, introducing a species of wasp
that feeds on the eggs of sharpshooters
what is fanleaf virus? how was the disease spread
enormously? - ANSWER-- a long-standing group of diseases
(also called Fanleaf degeneration) that is now found around
the world- American continent
- grafted vines following phylloxera and the inadvertent use of
infected plant material; also spread by dagger nematodes
how is leafroll virus spread? what does it do? - ANSWER--
grafting and mealy bugs
- slows shoot & root growth
what is the typical Brix range at harvest for still dry wines? -
ANSWER-19-25 degrees
what are advantages of machine harvesting? - ANSWER--
significantly faster and substantially cheaper
- avoids issues of the lack of availability of, and possible
unreliability among, casual workers
- grapes can be harvested at night and be kept up to 15°C /
59°F cooler - timing of the harvest can wait until the desired
, level of ripeness has been achieved and then carried out
quickly
what are disadvantages of machine harvesting? - ANSWER--
less gentle than hand-harvesting
- not economic or practical for small-scale vineyards
- may be unsuitable for grape growers that have several
different varieties ripening at different times in the same plot
- not suitable for vineyards on steep slopes or with limited
access
- competition for the rental of the machine at the best moment
for harvest
what are the components of wine? - ANSWER-- water (~85%)
- alcohol (ethanol, higher alcohols)
- acids (tartaric, malic, lactic, acetic)
- aromatics
- RS
- glycerol
- phenolics (anthocyanins, tannins)
why are TA and pH not exactly correlated? - ANSWER-
buffering effect of other molecules
what is the typical range of TA in a wine? - ANSWER-5.5-8.5 g/l
