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 is the chemical process used by plants to make glucose and oxygen?

  • Photosynthesis
  • Uses carbon dioxide and water
  • Requires light energy
• What is produced as a by-product of photosynthesis?

  Oxygen
• Which organisms besides plants are capable of photosynthesis?

  Algae and some bacteria
• What is glucose used for in cells?

  For respiration
• What are inorganic chemicals in the context of photosynthesis?

  Compounds that do not include carbon combined with hydrogen
• What is the gaseous compound needed by plants for photosynthesis?

  Carbon dioxide
• What is the role of light energy in photosynthesis?

  It drives the chemical reaction
• What type of reaction is photosynthesis classified as?

  Endothermic reaction
• What pigment is responsible for absorbing light energy in plants?

  Chlorophyll
• Where is chlorophyll located in plant cells?

  In chloroplasts
• What is the function of chloroplasts in plant cells?

  They are the site of photosynthesis
• What are the two types of mesophyll cells in leaves?

  Palisade and spongy mesophyll cells
• What is the main photosynthetic organ of a plant?

  Leaves
• How does carbon dioxide enter the leaves for photosynthesis?

  Through the stomata
• What is the function of the xylem in plants?

  To transport water and minerals
• What happens to the oxygen produced during photosynthesis?

  Some is used for respiration, and some is released into the atmosphere
• When do plants give out oxygen?

  During the day, if the rate of photosynthesis is sufficiently high
• What is respiration in the context of plants?

  The chemical change that takes place inside living cells using glucose and oxygen
• What is the by-product of respiration?

  Carbon dioxide
• What is biosynthesis in plants?

  The production of more complex molecules from simpler ones
• How is glucose used in plants after photosynthesis?

  • Used for respiration
  • Used for biosynthesis of materials needed for growth
  • Stored as starch
• What is the main purpose of photosynthesis?

  To produce glucose and oxygen
• What is the relationship between photosynthesis and respiration?

  Photosynthesis produces glucose and oxygen, while respiration uses them
• How do limiting factors affect the rate of photosynthesis?

  They can restrict the rate at which photosynthesis occurs
• What are some factors that can limit the rate of photosynthesis?

  Light intensity, carbon dioxide concentration, and temperature
• What is the role of stomata in leaves?

  They control gas exchange
• How does water enter the plant?

  Through the roots
• What is the significance of chlorophyll in photosynthesis?

  It enables photosynthesis to take place
• What happens to glucose not used for respiration?

  It is used for biosynthesis or stored
• How do palisade and spongy mesophyll cells differ in function?

  Palisade cells are tightly packed for light absorption, while spongy cells allow gas exchange
• What is the importance of light energy in photosynthesis?

  It is essential for driving the chemical reactions
• What is the basic unit of life in organisms?

  Cell
• What is the role of the epidermis in leaves?

  It protects the leaf and helps in gas exchange
• How does the structure of leaves facilitate photosynthesis?

  The structure allows for maximum light absorption and gas exchange
• What is the significance of the green color of plants?

  It indicates the presence of chlorophyll, which is essential for photosynthesis
• What is the primary function of chloroplasts?

  To carry out photosynthesis
• How does photosynthesis contribute to the ecosystem?

  It produces oxygen and organic compounds that support life
• What is the relationship between photosynthesis and the food chain?

  Photosynthesis is the foundation of the food chain, providing energy for all organisms