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 primary pigment involved in photosynthesis?

Back

Chlorophyll is the primary pigment involved in photosynthesis, which absorbs light energy.

Front

What are the two main stages of photosynthesis?

Back

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

Front

How does light intensity affect the rate of photosynthesis?

Back

Light intensity generally increases the rate of photosynthesis up to a certain point, after which it may plateau or decline.

Front

What gases are involved in photosynthesis?

Back

Carbon dioxide enters plants during photosynthesis, while oxygen is released as a byproduct.

Front

What is the chemical equation for photosynthesis?

Back

The chemical equation for photosynthesis is 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂.

Front

What role does water play in photosynthesis?

Back

Water is a reactant in photosynthesis, providing electrons and protons, and is split during the light-dependent reactions.

Front

What is the significance of chlorophyll in photosynthesis?

Back

Chlorophyll absorbs light energy, primarily in the red and blue wavelengths, which is essential for driving the photosynthetic process.

Front

What happens to the rate of photosynthesis if a plant is enclosed in an air-proof bottle?

Back

The rate of photosynthesis would gradually slow down to zero because carbon dioxide is used up and cannot be replenished.

Front

What is the role of the Calvin cycle in photosynthesis?

Back

The Calvin cycle is the light-independent stage of photosynthesis where carbon dioxide is fixed into glucose using ATP and NADPH produced in the light-dependent reactions.