9.2 PHOTOSYNTHESIS

Question 1

What is photosynthesis?

Answer 1

The process by which plants manufacture carbohydrates and oxygen from raw materials such as carbon dioxide and water using energy from light

Question 2

What is the word equation for photosynthesis?

Answer 2

Carbon dioxide + water –(light energy^ chlorophyll)–> glucose + oxygen

Question 3

What is the chemical equation of photosynthesis?

Answer 3

6CO2 + 6H2O –(light^ chlorophyll)–> C6H12O6 + 6O2

Question 4

What are the importances of chloroplast?

Answer 4

• Chloroplast is a structure found in many plant cells where photosynthesis reactions take place
• Green pigment chlorophyll found in chloroplast captures light energy for photosynthesis

Question 5

What is the use of glucose in plants?

Answer 5

1. For aerobic respiration
   - Cellular respiration provides energy available for other reactions of life in plant such as growth
2. For energy storage
   - Glucose molecules are joined together to make large insoluble starch molecules (sucrose)
3. To make other molecules
   - Glucose molecules are the building blocks for other molecules
   - Glucose is converted into cellulose to make cell wall
   - Glucose combines with magnesium ions to form chlorophyll