WSET DIPLOMA D1 NEWEST 2025 ACTUAL EXAM COMPLETE 250 QUESTIONS AND CORRECT DETAILED ANSWERS

WSET Diploma D1 / WSET Diplo
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ma D1 QUESTIONS AND CORR
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ECT DETAILED ANSWERS WITH
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RATIONALES (VERIFIED ANSW
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ERS)
|ALREADY GRADED A+
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,Most important North American grape species -
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CORRECT ANSWER-
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Vitis labrusca, Vitis riparia, Vitis berlandieri and Vitis rupe
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stris


Four main sections of a grape vine - CORRECT ANSWER-
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the main shoots, one-year-
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old wood, permanent wood and the roots
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What comprises the canopy of a vine? - CORRECT ANSWER-
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mThe main shoots and all of their major structures -
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stem, buds, leaves, lateral shoots, tendrils and inflorescen
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ces/grape bunches m




What do the main shoots grow from, and when? -
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CORRECT ANSWER-
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The main shoots on the vine grow in spring from buds retain
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ed from the previous year
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Where are carbohydrates stored in a vine? -
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CORRECT ANSWER-Stems, trunks, roots
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Define lignify - CORRECT ANSWER-m m m m



Green shoots become woody and rigid, they are then calle
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d canes
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,Where do buds form? - CORRECT ANSWER-
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between the leaf stalk (petiole) and the stem
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, Define the two types of buds - CORRECT ANSWER--
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mCompound buds (form in one growing season and break op
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en the following growing season, producing main shoots; typ
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ically a primary, secondary, and maybe tertiary)-
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mPrompt buds (form and break open same season, form later
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al shoots)
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- Prompt buds (form and break open same season, form l
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ateral shoots) m




What is the main function of lateral shoots? When are they d
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esirable/undesirable? - CORRECT ANSWER-- m m m



to allow the plant to carry on growing if the tip of the main s
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hoot has been damaged or eaten
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- can provide an additional source of leaves for photosynthes
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is (useful if the laterals are near the ends of the main shoots)
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What is second crop? - CORRECT ANSWER-
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Lateral shoots often produce inflorescences, which can be
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known as a 'second crop'm m m m




- Growth of laterals nearer the base of the main shoot can be u
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ndesirable as they impede air flow and can shade the fruit to
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o much
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