photosynthesis

• What process must a plant carry out to grow and survive?

  Photosynthesis
• Where does photosynthesis take place in a plant?

  In the leaves, specifically in the chloroplasts
• What pigment is found in chloroplasts that absorbs light?

  Chlorophyll
• What is the role of light in photosynthesis?

  It provides energy to convert carbon dioxide and water into glucose and oxygen
• Write the chemical equation for photosynthesis using symbols.

  6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂
• What type of reaction is photosynthesis and why?

  It is an endothermic reaction because it requires energy from light
• How does carbon dioxide enter the leaves of a plant?

  Through the stomata
• How does water reach the leaves of a plant?

  It is taken up from the soil by the roots and transported via the xylem
• What is the main product that plants want from photosynthesis?

  Glucose
• What is one use of glucose in plants?

  It is used for cellular respiration to release energy
• What are the five main uses of glucose in plants?

  1. Cellular respiration (energy release)
  2. Making cellulose (strengthens cell walls)
  3. Making starch (long-term energy storage)
  4. Making amino acids (for protein synthesis)
  5. Making oils and fats (energy resource for seeds)
• Why is starch a better form of glucose for storage in plants?

  Because it is more compact and insoluble, preventing water absorption
• How do plants use glucose during times when photosynthesis is not occurring?

  They break down stored starch to release glucose
• How do plants make amino acids?

  By combining glucose molecules with nitrate ions from the soil
• What is the significance of glucose for plant growth rates?

  Growth rates depend on how fast plants can photosynthesize to produce glucose
• What factors affect the rate of photosynthesis?

  1. Light intensity
  2. Temperature
  3. Carbon dioxide concentration
  4. Amount of chlorophyll