Photosynthesis Quiz

What is photosynthesis?

• The breakdown of sugar into carbon dioxide and water.

• The process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

• The process by which animals convert sunlight into energy.

• A method by which plants absorb water from the soil.

What pigment in plant leaves is responsible for their green color?

• Hemoglobin

• Carotene

• Melanin

• Chlorophyll

During photosynthesis, what is oxidized and what is reduced?

• Water is oxidized and carbon dioxide is reduced

• Carbon dioxide is oxidized and water is reduced

• Oxygen is oxidized and glucose is reduced

• Glucose is oxidized and oxygen is reduced

Where do the light-dependent reactions of photosynthesis occur?

• Thylakoid membrane

• Stroma

• Mitochondria

• Chloroplast

What are the products of the light-independent reactions in photosynthesis?

• Carbon dioxide and water

• ATP and NADPH

• Oxygen and water

• Carbohydrate molecules like glucose

What is the main difference between C3 and C4 photosynthesis?

• C4 photosynthesis produces a four-carbon intermediate compound, while C3 photosynthesis produces a three-carbon compound.

• C3 photosynthesis occurs only in the dark, while C4 occurs in light.

• C4 photosynthesis uses more water than C3 photosynthesis.

• C3 photosynthesis is not efficient in hot climates, unlike C4.

What is the role of chlorophyll in photosynthesis?

• It produces carbon dioxide.

• It absorbs energy from light waves.

• It stores water in the plant cells.

• It converts glucose into energy.

Which of the following is not a product of photosynthesis?

• Carbon dioxide

• Oxygen

• Glucose

• Water