Question

Where do plants obtain most of their carbon and oxygen?

• A. From nitrates in the soil
• B. From ammonia in the soil
• C. From nitrogen in the atmosphere
• D. From carbon dioxide in the atmosphere

Answer 1

Answer:

D. From carbon dioxide in the atmosphere

• Plants obtain most of their carbon and most of their oxygen from CO2 in the atmosphere.

• However, their remaining nutritional requirements are obtained from water and minerals in the soil.