Science: Photosynthesis

What is photosynthesis?

• Photosynthesis is the process of converting sound waves into energy

• Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose molecules.

• Photosynthesis is the process of converting heat into energy

• Photosynthesis is the process of converting metals into energy

Which pigment is responsible for capturing light energy during photosynthesis?

• Chlorophyll

• Melanin

• Xanthophyll

• Carotene

What are the two main stages of photosynthesis?

• Light reactions and Citric acid cycle

• Light-dependent reactions and light-independent reactions

• Calvin cycle and Krebs cycle

• Dark reactions and Calvin cycle

Where does photosynthesis primarily take place in a plant cell?

• mitochondria

• cytoplasm

• nucleus

• chloroplasts

What are the reactants of photosynthesis?

• Carbon dioxide and water

• Nitrogen and sunlight

• Oxygen and glucose

• Hydrogen and carbon monoxide

What are the products of photosynthesis?

• Water and carbon dioxide

• Fructose and nitrogen

• ATP and NADPH

• Glucose and oxygen

How does photosynthesis contribute to the oxygen cycle?

• Photosynthesis contributes to the oxygen cycle by releasing oxygen into the atmosphere.

• Photosynthesis has no impact on the oxygen cycle

• Photosynthesis converts oxygen into carbon dioxide

• Photosynthesis absorbs oxygen from the atmosphere

Explain the importance of photosynthesis in the ecosystem.

• Photosynthesis is harmful to the ecosystem as it depletes resources.

• Photosynthesis only benefits a small portion of the ecosystem.

• Photosynthesis is essential for producing oxygen, providing food, and sustaining life in the ecosystem.

• Photosynthesis has no impact on the ecosystem.