WSET Diploma D1 / WSET Diploma D1 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+

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 What is green harvesting? - CORRECT ANSWER-Removal of second crop during summer Define one-year-old wood - CORRECT ANSWER-the main shoots from the last growing season that were kept at pruning, supports compound buds; cane or spur Define permanent wood - CORRECT ANSWER-woody parts of the vine that are older than one year, including the trunk where are most roots found? - CORRECT ANSWER-top 50cm of soil what distinguishes PN clone 115? - CORRECT ANSWER-low yield, small grapes, good for high quality of red wines what distinguishes PN clone 521? - CORRECT ANSWER-high yield, bigger grapes, good for sparkling wine production When is leaf fall and dormancy? - CORRECT ANSWER-Nov-March