If a potted plant and a dish containing potassium hydroxide are covered by a sealed container, made up of glass, are kept in sunlight for a week, what will happen:

Options

A. Plant will grow taller
B. Leaf will turn yellow due to no photosynthesis
C. Leaf will turn green due to excess photosyn thesis
D. Leaf will turn yellow due to no oxygen in the jar

Explanation

To answer the question, we need to analyze the situation involving a potted plant and a dish containing potassium hydroxide (KOH) in a sealed glass container exposed to sunlight for a week.

### Step-by-Step Solution:

1. **Understanding Photosynthesis**:
- Photosynthesis is the process by which plants convert carbon dioxide (CO2) and sunlight into glucose and oxygen (O2). For this process to occur, plants need carbon dioxide.

2. **Role of Potassium Hydroxide**:
- Potassium hydroxide is a strong base that absorbs carbon dioxide from the air. When KOH is present in the sealed container, it will absorb any CO2 that is available.

3. **Sealed Environment**:
- Since the container is sealed, no additional carbon dioxide can enter from the outside environment. The KOH will absorb the CO2 that is initially present in the container.

4. **Impact on the Plant**:
- As the KOH absorbs carbon dioxide, the concentration of CO2 in the container decreases. Since CO2 is essential for photosynthesis, the plant will not be able to perform this process effectively.

5. **Consequences of Lack of Photosynthesis**:
- Without photosynthesis, the plant cannot produce the food it needs to grow. Over time, the plant will show signs of stress.
- The leaves may turn yellow due to chlorosis, which occurs when there is insufficient chlorophyll production, often linked to a lack of nutrients or light, but in this case, primarily due to the lack of CO2.

6. **Conclusion**:
- After a week in sunlight, the plant will likely not grow taller and will show yellowing leaves due to the lack of photosynthesis caused by the absorption of carbon dioxide by potassium hydroxide.

### Final Answer:
The leaves of the plant will turn yellow due to the absence of photosynthesis, which is a result of the potassium hydroxide absorbing the carbon dioxide in the sealed container.

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