What is the disadvantage of photores piration?

Explanation

### Step-by-Step Solution:

1. **Definition of Photorespiration**:
- Photorespiration is a process that occurs in many higher plants where they take up oxygen and release carbon dioxide in the presence of light. This is contrary to the normal process of photosynthesis, where plants take in carbon dioxide and release oxygen.

2. **Impact on Photosynthesis**:
- One of the primary disadvantages of photorespiration is that it decreases the overall effectiveness of photosynthesis. This is because photorespiration competes with the normal photosynthetic process.

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