CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
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Number of known grape varieties in the world - CORRECT
ANSWER Over 1,000
Majority of global grape varieties belong to what species -
CORRECT ANSWER Vitis Vinifera
Vitis Vinifera is indigenous to where - CORRECT ANSWER
Eurasia
What grape varietal species is indigenous to Eurasia - CORRECT
ANSWER Vitis Vinifera
Where are North American grape species used for production? -
CORRECT ANSWER New York state
,What is the main function of N. American grape species globally? -
CORRECT ANSWER Rootstocks for grafting vitis vinifera onto
What are the most important N. American grape species (4)? -
CORRECT ANSWER Vitis Labrusca
Vitis Riparia
Vitis Berlandieri
Vitis Rupestris
Anatomy of the Vine (4) - CORRECT ANSWER Main shoots
One-year-old wood
Permanent wood
Roots
What are the major structures of the main shoots - CORRECT
ANSWER Stem
bud
leaves
lateral shoots
tendrils
Inflorescences / grape bunches
What does the canopy refer to? - CORRECT ANSWER Main
shoots and their major structures
Where do main shoots grow from? - CORRECT ANSWER Buds
retain from prior year
What does the stem do for its structures (3)? - CORRECT
ANSWER Structure components attach to
Transports water and solutes to/from structures
Store of carbohydrates
,What are in the solutes in stems? - CORRECT ANSWER Sugars
and minerals
What are nodes on a stem? - CORRECT ANSWER Swellings
where structures are attached
What are internodes? - CORRECT ANSWER Length of stem
between nodes
What does lignify mean? - CORRECT ANSWER Green shoots
become woody, rigid, and turn brown
What is a cane? - CORRECT ANSWER A lignified shoot
What are the two types of buds? - CORRECT ANSWER
Compound/latent
Prompt
What does a bud contain? - CORRECT ANSWER All the green
parts; stem, buds, tendrils, leaves, inforescences
What is another name for compound buds - CORRECT ANSWER
Latent buds
When do compound buds form and break open? - CORRECT
ANSWER Form in year 1 and break open in year 2 (if retained)
What do compound buds produce? - CORRECT ANSWER Main
shoots in the following growing season
What types of buds are contained within a compound bud? -
CORRECT ANSWER Primary bud (main growing point)
Secondary buds
Tertiary buds
, What is the purpose of secondary and tertiary buds - CORRECT
ANSWER Only grow in the event the primary bud is damaged
(Spring frost)
When do prompt buds for and break open - CORRECT ANSWER
Same growing season
Where do prompt buds form? - CORRECT ANSWER Main shoot
What do prompt buds produce - CORRECT ANSWER Lateral
shoots
Where do lateral shoots grow from? - CORRECT ANSWER
Current year buds (prompt buds)
How do the size of lateral shoots compare in size to main shoots? -
CORRECT ANSWER Smaller and thinner
What are the possible parts of a lateral shoot? - CORRECT
ANSWER Stem
Leaves
Buds
Tendrils
Possibly inflorescences
What is the function of a lateral shoot - CORRECT ANSWER
Allow the plant to grow if the tip of the main shoot is damaged or
eaten.
How do lateral shoots benefit the vine - CORRECT ANSWER
Provide additional source of leaves for photosynthesis