Final answer:
Photosynthesis occurs only in the day time while respiration occurs both day and night.
Step-by-step explanation:
d. Photosynthesis occurs only in the day time and respiration occurs only in the night time.
Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose and oxygen. It takes place in the presence of light, so it occurs during the day. On the other hand, respiration is the process by which both plants and animals break down glucose to release energy. It occurs constantly, day and night. However, during the night when there is no light for photosynthesis, plants rely solely on respiration for energy.
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