IGCSE - Photosynthesis

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What is the balanced chemical equation for photosynthesis?

Back

6CO2 + 6H2O + light energy → C6H12O6 + 6O2

Front

What is the main energy change that occurs during photosynthesis?

Back

Light energy is converted into chemical energy.

Front

What is the primary pigment involved in photosynthesis?

Back

Chlorophyll is the primary pigment that absorbs light energy.

Front

What are the two main stages of photosynthesis?

Back

The two main stages are the light-dependent reactions and the light-independent reactions (Calvin cycle).

Front

What do plants produce as a byproduct of photosynthesis?

Back

Oxygen is produced as a byproduct of photosynthesis.

Front

What is the role of chloroplasts in photosynthesis?

Back

Chloroplasts are the organelles in plant cells where photosynthesis takes place.

Front

What is glucose used for in plants?

Back

Glucose is used for energy, growth, and can be converted into starch for storage.

Front

What factors affect the rate of photosynthesis?

Back

Light intensity, carbon dioxide concentration, temperature, and water availability affect the rate of photosynthesis.

Front

What is the significance of photosynthesis to life on Earth?

Back

Photosynthesis is crucial as it produces oxygen and organic compounds that are the foundation of the food chain.