Question

during respiration, plants release ________ into the atmosphere.

oxygen

nitrogen

phosphorus

carbon dioxide

Explanation:

Respiration in plants involves breaking down glucose to release energy, and the by - products are carbon dioxide and water. Oxygen is released during photosynthesis, not respiration. Nitrogen and phosphorus are not typical gaseous products of plant respiration. So plants release carbon dioxide during respiration.

Answer:

D. carbon dioxide (assuming the options are labeled A to D with A. oxygen, B. nitrogen, C. phosphorus, D. carbon dioxide)