5.1.3 Factors Affecting Photosynthesis

    Cards (40)

    • What is the chemical equation for photosynthesis?
      6CO2+6CO_{2} +6H2OlightC6H12O6+ 6H_{2}O \xrightarrow{light} C_{6}H_{12}O_{6} +6O2 6O_{2}
    • In photosynthesis, carbon dioxide and water are the reactants
    • Water availability is a key factor affecting photosynthesis.
    • What happens to photosynthesis at low light intensity?
      It is limited
    • Temperature affects enzyme activity
    • Light saturation occurs when increasing light intensity no longer increases the photosynthetic rate.
    • Why is photosynthesis limited at low light intensity?
      Insufficient energy
    • At light saturation, other factors such as carbon dioxide concentration become limiting
    • Carbon dioxide concentration is a key factor affecting photosynthesis.
    • What happens to photosynthesis when carbon dioxide concentration is low?
      It is limited
    • Optimal temperatures promote photosynthesis by affecting enzyme activity
    • Water stress in plants can limit photosynthesis.
    • Low carbon dioxide concentration limits photosynthesis.
    • Optimal temperatures promote enzyme activity
    • Water stress due to lack of water availability limits photosynthesis
    • Light intensity refers to the amount of light a plant receives
    • Low light intensity results in limited photosynthesis.
    • Photosynthesis reaches light saturation at high light intensity
    • Increasing light intensity beyond saturation does not increase photosynthesis.
    • Carbon dioxide concentration refers to the amount of CO2_{2} in the surrounding atmosphere
    • Order the relationship between carbon dioxide concentration and photosynthetic rate:
      1️⃣ Low CO_{2}</latex> limits photosynthesis
      2️⃣ Moderate CO2_{2} increases photosynthesis
      3️⃣ High CO2_{2} leads to saturation
    • Low CO2_{2} concentrations can significantly limit photosynthesis
    • Temperature affects photosynthesis by influencing the activity of enzymes
    • Rubisco functions most effectively at temperatures around 25-30°C.
    • At high temperatures, enzymes can become denatured
    • Photosynthesis converts light energy into chemical energy in the form of glucose
    • The chemical equation for photosynthesis is 6CO_{2} + 6H_{2}O \xrightarrow{light} C_{6}H_{12}O_{6} + 6O_{2}</latex>
    • In the chemical equation for photosynthesis, light is the energy source
    • What are the four key factors affecting photosynthesis?
      Light intensity, CO2_{2} concentration, temperature, water availability
    • Low light intensity limits the rate of photosynthesis
    • Optimal temperatures promote enzyme activity, which in turn increases photosynthesis
    • Match the factor with its effect on photosynthesis:
      Light Intensity ↔️ Increases rate up to a point
      Carbon Dioxide Concentration ↔️ Enhances rate to saturation
      Temperature ↔️ Affects enzyme activity
      Water Availability ↔️ Ensures proper hydration
    • What happens to photosynthesis when water stress occurs?
      It is limited
    • The overall equation for photosynthesis is: 6CO_{2} +6H_{2}O \xrightarrow{light} C_{6}H_{12}O_{6} + 6O_{2}</latex>. The light in this equation is represented as energy
    • At high light intensity, photosynthesis plateaus due to light saturation.
    • When carbon dioxide reaches saturation levels, other factors become limiting
    • What is the optimal temperature range for photosynthesis?
      25-30°C
    • Order the relationship between water level and photosynthetic rate:
      1️⃣ High water level: Optimal photosynthesis
      2️⃣ Low water level: Reduced photosynthesis
      3️⃣ Water stress: Stomata close to conserve water
    • Excessive chlorophyll concentration can lead to a plateau in the photosynthetic rate
    • What happens to the overall photosynthetic rate when one factor becomes limiting?
      It is constrained
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