acids increase, tannins increase, pH is low, green veggie flavors - ANSWERSacids increase, tannins
increase, pH is low, green veggie flavors
Berry Composition during ripening - ANSWERSAnthocyanin (color development)Flavor and aroma
developmentsugar increaseacids decreasepH increases
Which of the following is typically measured as a general indicator of fruit "maturity" ("ripeness")? -
ANSWERSSugar (oBrix)
Grapes are harvested when they are considered to be at optimal "maturity" ("ripeness"), which is
defined by the: - ANSWERStype and style of wine to be made
Veraison is a French term indicating the stage of fruit ripening when fruit is fully mature and ready to
harvest. - ANSWERSBerries soften, color begins to develop, sugar increases, acids decrease, veggie
flavors decrease, fruit flavors develop
BEGINNING OF RIPENING
There is archeological evidence that wine has been produced from grapes since at least 6,000 years ago.
- ANSWERStrue
The European Grape (Vitis vinifera) originated in France. - ANSWERSFALSE (EUROPE)
In ancient times, wine was often the safest beverage for human consumption because water supplies
were often contaminated with disease-causing microorganisms. - ANSWERSTRUE
Thomas Jefferson successfully grew the European Grape (Vitis vinifera) in America. - ANSWERSFALSE
, Thomas Volney Munson was a Texan who became a grape taxonomist and grape breeder, and owned a
plant nursery. - ANSWERSTRUE
Which of the following states had a thriving wine industry in the 1800s based on grape varieties derived
from American grape species? - ANSWERSMissouri
New York
Ohio
What was one of the important lessons we can learn from the viticultural work and experiences of
Thomas Jefferson and Thomas Volney Munson? - ANSWERSNative grape species are better adapted to
their local environment than introduced (foreign) grape species
Respiration - ANSWERSUtilization of stored energy to power all life processes of plants.
Transpiration - ANSWERSMovement of water vapor out of leaves through stomates.
What are the immediate byproducts of photosynthesis? - ANSWERSCarbohydrate and oxygen (O2)
Most Vitis vinifera wine grapes can accumulate sugar content up to 24% or 25% sugar. - ANSWERSTRUE
As a chemical reaction, photosynthesis splits carbon dioxide (CO2) and water (H2O). - ANSWERSTRUE
Worldwide, most grape varieties grown for wine production are of the species Vitis vinifera. -
ANSWERSTRUE
Grape varieties can be reproduced by rooting cuttings or bench grafting. - ANSWERSTRUE
A wine produced entirely or predominantly (75%) from a single variety of grape is considered a varietal
wine. - ANSWERSTRUE
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