Photosynthesis Quiz

What is the primary process by which autotrophs produce their own food?

• Respiration

• Fermentation

• Decomposition

• Photosynthesis

In which part of the plant does photosynthesis mainly occur?

• Roots

• Stems

• Leaves

• Flowers

What is the main product of the Calvin Cycle?

• Oxygen

• Glyceraldehyde-3-Phosphate

• ATP

• NADPH

What are the two main types of reactions in photosynthesis?

• Aerobic and anaerobic reactions

• Calvin cycle and Krebs cycle

• Oxidation and reduction reactions

• Light reactions and dark reactions

Which enzyme is responsible for fixing carbon in the Calvin Cycle?

• ATP synthase

• RuBisCo

• NADP reductase

• Phosphofructokinase

What is produced as a waste product during the light reactions of photosynthesis?

• Glucose

• Oxygen

• Carbon dioxide

• Water

What is the role of chlorophyll in photosynthesis?

• To release oxygen

• To absorb light energy

• To fix carbon

• To absorb water

Which of the following factors does NOT affect the rate of photosynthesis?

• Soil pH

• Water

• Light intensity

• Nitrogen

What happens to photosynthesis rates when temperatures exceed the optimal range for a plant?

• They decrease

• They double

• They increase

• They remain the same

What is the function of the thylakoid membrane?

• Site of respiration

• Site of light reactions

• Site of carbon fixation

• Site of the Calvin Cycle