Factors affecting photosynthesis

• What process do plants use to make their own food?

  Photosynthesis
• Why is the food produced by plants important?

  It is important for the plants themselves and for other organisms that feed on them
• What are the main factors affecting photosynthesis?

  • Light intensity
  • Carbon dioxide concentration
  • Temperature
  • Amount of chlorophyll
• What is a limiting factor in photosynthesis?

  A limiting factor is a condition that, if in short supply, reduces the rate of photosynthesis
• What is the role of chlorophyll in photosynthesis?

  Chlorophyll absorbs light energy required for photosynthesis
• How does light intensity affect the rate of photosynthesis?

  Increasing light intensity increases the rate of photosynthesis until a limiting factor becomes short supply
• What happens to photosynthesis at very high light intensities?

  Photosynthesis is slowed and then inhibited
• What is the effect of increasing carbon dioxide concentration on photosynthesis?

  Increasing carbon dioxide concentration increases the rate of photosynthesis
• How does temperature affect the rate of photosynthesis?

  The rate of photosynthesis is affected by temperature due to enzyme activity
• What happens to enzymes at high temperatures?

  Enzymes are denatured
• What is the compensation point in photosynthesis?

  The compensation point is the light intensity at which the rate of photosynthesis equals the rate of respiration
• Why do graphs of oxygen production and carbon dioxide uptake not go through the origin?

  Because they are affected by respiration as well as photosynthesis
• What is the chemical change that takes place inside living cells using glucose and oxygen?

  Respiration
• What is the role of enzymes in photosynthesis?

  Enzymes catalyze the chemical reactions that combine carbon dioxide and water to produce glucose
• What is the composition of chlorophyll?

  Chlorophyll is a green pigment found in the chloroplasts of plant cells
• What part of the electromagnetic spectrum does chlorophyll absorb?

  Chlorophyll absorbs the red and blue parts of the electromagnetic spectrum
• How does the amount of chlorophyll affect photosynthesis?

  Leaves with more chlorophyll are better able to absorb light required for photosynthesis
• What is the relationship between respiration and photosynthesis?

  Respiration produces carbon dioxide, which is used in photosynthesis
• What is the gaseous element needed by living organisms for respiration?

  Oxygen
• What is the gaseous compound needed by plants for photosynthesis?

  Carbon dioxide
• What is the importance of carbohydrates in plants?

  Carbohydrates are important for photosynthesis and energy storage
• What is the by-product of respiration?

  Carbon dioxide
• How do plant diseases affect photosynthesis?

  Some plant diseases affect the amount of chlorophyll, reducing the ability to photosynthesize
• What is the main food group consisting of sugars, starch, and cellulose?

  Carbohydrates
• What is the significance of measuring the rate of oxygen output in photosynthesis?

  It helps determine the rate of photosynthesis
• What is the significance of measuring the rate of carbon dioxide uptake in photosynthesis?

  It helps determine the rate of photosynthesis
• What is the significance of measuring the rate of carbohydrate production in photosynthesis?

  It helps determine the efficiency of photosynthesis
• What is the main product of photosynthesis?

  Glucose
• How does water affect photosynthesis?

  Water is one of the reactants needed for photosynthesis
• What is the role of light in photosynthesis?

  Light provides the energy needed for photosynthesis
• What happens to the rate of photosynthesis when all factors are optimal?

  The rate of photosynthesis reaches its maximum
• How do environmental changes affect photosynthesis?

  Environmental changes can alter light intensity, carbon dioxide concentration, and temperature, affecting the rate of photosynthesis
• What is the relationship between photosynthesis and the food chain?

  Photosynthesis is the foundation of the food chain, providing energy for plants and organisms that consume them
• What is the primary pigment involved in photosynthesis?

  Chlorophyll
• How does the structure of chlorophyll relate to its function?

  The structure of chlorophyll allows it to absorb specific wavelengths of light for photosynthesis
• How do plants adapt to unfavorable lighting conditions?

  Plants synthesize more chlorophyll to absorb the light required for photosynthesis
• What is the significance of the electromagnetic spectrum in photosynthesis?

  The electromagnetic spectrum includes the wavelengths of light that chlorophyll absorbs for photosynthesis
• What is the main by-product of photosynthesis?

  Oxygen
• How does photosynthesis contribute to the oxygen supply in the atmosphere?

  Photosynthesis produces oxygen as a by-product, contributing to the atmosphere's oxygen supply
• How do human activities impact photosynthesis?

  Human activities can alter carbon dioxide levels and light availability, affecting photosynthesis