Photosynthesis

• What is the word equation for Photosynthesis?

  A) carbon dioxide

  B) water

  C) glucose

  D) oxygen

  
• Name all parts in glucose usage in plants.

  A) cellulose

  B) starch

  C) sucrose

  D) proteins

  E) fats and oils

  
• What is the process by which plants make food?

  Photosynthesis
• What gas do plants take in for photosynthesis?

  Carbon dioxide
• How does carbon dioxide enter the plant?

  Through the stomata
• How does water enter the plant?

  Through the roots by osmosis
• What do carbon dioxide and water react to produce in photosynthesis?

  Glucose
• What is produced as a waste product during photosynthesis?

  Oxygen
• What does the plant do with some of the oxygen produced?

  Uses it in respiration
• Where does photosynthesis primarily occur in the plant?

  In the chloroplasts
• Why are leaves and stems green?

  They contain chlorophyll
• What role does light play in photosynthesis?

  Transfers energy to chlorophyll
• What is glucose's role in the plant?

  Stores energy within its chemical bonds
• What are the two main stages of photosynthesis?

  • Stage 1 (light dependent):
  • Energy splits water into oxygen and hydrogen ions
  • Stage 2 (light independent):
  • Carbon dioxide combines with hydrogen ions to make glucose
• What type of reaction is photosynthesis classified as?

  An endothermic reaction
• What must happen for photosynthesis to continue?

  Energy must be transferred from surroundings
• What does the plant do with some of the glucose it produces?

  It uses it immediately in respiration
• What are other sugar molecules that glucose can be converted into?

  Fructose and sucrose
• Where is fructose found in high quantities?

  In fruit
• What is sucrose made up of?

  One molecule each of glucose and fructose
• Where is sucrose found in high quantities?

  In stems, such as sugar cane
• What happens to glucose that is not needed immediately?

  It is converted to starch
• Why is starch important for plants?

  It provides a store of energy
• When can starch be used by plants?

  At night for respiration
• What are plants made of besides sugars and starch?

  Proteins, cellulose, and fats
• How are proteins, cellulose, and fats made in plants?

  From sugars and other substances
• What is the role of respiration in plants?

  It provides energy for immediate use
• How does the conversion of glucose to starch benefit plants?

  It allows energy storage for later use
• What is the significance of chemical reactions in plants?

  They create essential compounds like proteins