Photosynthesis Flashcards
(26 cards)
What is photosynthesis?
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using carbon dioxide and water.
Why is photosynthesis important in viticulture?
Photosynthesis is crucial in viticulture as it provides the energy necessary for grapevine growth, fruit development, and overall vineyard productivity.
True or False: Photosynthesis occurs only during the daytime.
True
What are the primary products of photosynthesis?
The primary products of photosynthesis are glucose and oxygen.
Fill in the blank: Photosynthesis occurs in the __________ of plant cells.
chloroplasts
What role does chlorophyll play in photosynthesis?
Chlorophyll absorbs light energy, which is essential for the photosynthesis process.
Multiple Choice: Which of the following factors influence photosynthesis? A) Light Intensity B) Temperature C) Water Availability D) All of the above
D) All of the above
What is the equation for photosynthesis?
6CO2 + 6H2O + light energy → C6H12O6 + 6O2
How does photosynthesis affect grape quality?
Effective photosynthesis leads to better sugar accumulation, flavor development, and overall grape quality.
True or False: High levels of CO2 can negatively impact photosynthesis.
False
What is the relationship between photosynthesis and climate in viticulture?
Climate affects photosynthesis rates, which in turn influences grapevine growth and wine quality.
Fill in the blank: The process of converting sunlight into chemical energy occurs during the __________ stage of photosynthesis.
light-dependent
What are stomata and their role in photosynthesis?
Stomata are small openings on leaves that allow the exchange of gases, such as CO2 intake and O2 release.
Multiple Choice: Which part of the grapevine is primarily responsible for photosynthesis? A) Roots B) Leaves C) Grapes D) Stems
B) Leaves
What is the significance of photosynthetic efficiency in vineyards?
Higher photosynthetic efficiency leads to increased biomass production and improved yields in vineyards.
True or False: Photosynthesis can occur in the absence of sunlight if artificial light is provided.
True
What are some environmental stresses that can affect photosynthesis in grapevines?
Environmental stresses include drought, extreme temperatures, and nutrient deficiencies.
Fill in the blank: The __________ phase of photosynthesis does not require light.
Calvin cycle
How does canopy management relate to photosynthesis in viticulture?
Canopy management optimizes light exposure and airflow, enhancing photosynthesis efficiency.
Multiple Choice: What is the main sugar produced during photosynthesis? A) Fructose B) Sucrose C) Glucose D) Lactose
C) Glucose
What is the impact of shading on photosynthesis in grapevines?
Shading reduces light availability, leading to decreased photosynthesis and potentially lower yields.
True or False: Increasing leaf area can enhance photosynthesis in grapevines.
True
What is the primary energy source for photosynthesis?
The primary energy source for photosynthesis is sunlight.
Fill in the blank: The __________ is the pigment responsible for the green color in plants and plays a crucial role in photosynthesis.
chlorophyll
