Potted plants are not allowed to remain in room of a patient during night as

Options

A. they concume `O_(2)` at night
B. Produce `CO_(2)` at night
C. They release `O_(2)` only during day
D. they are unable to photosynthesize and deplete `O_(2)` of the room at night.

Answer

### Step-by-Step Solution:

1. **Understanding Photosynthesis**:
- Photosynthesis is the process by which green plants convert light energy into chemical energy, using carbon dioxide (CO2) and water (H2O) to produce glucose and oxygen (O2).

2. **Role of Stomata**:
- Stomata are small openings on the surface of leaves that allow for gas exchange. They open to take in carbon dioxide and release oxygen during the day when there is sufficient light.

3. **Day vs. Night Conditions**:
- During the day, when light is available, stomata are generally open, allowing for the intake of CO2 and the release of O2.
- At night, in the absence of light, stomata usually close to prevent water loss, and the process of photosynthesis halts.

4. **Respiration in Plants**:
- At night, plants continue to respire, which means they consume oxygen and release carbon dioxide. This is the opposite of what occurs during photosynthesis.

5. **Impact on Patients**:
- If potted plants are kept in a patient's room at night, they will consume the available oxygen through respiration. Since patients may already have compromised health, a decrease in oxygen levels can further affect their well-being.

6. **Conclusion**:
- Therefore, potted plants are not allowed to remain in the room of a patient during the night because they can deplete the oxygen levels, potentially harming the patient's health.