Compensation point is the value of a factor where there is

Options

A. Beginning of photosynthesis
B. Little photosynthesis
C. Photosynthesis equal to rate of respiration
D. Neither photosynthesis nor respiration.

Answer

### Step-by-Step Solution:

1. **Understanding the Compensation Point**: The compensation point refers to a specific condition in photosynthesis where the rate of photosynthesis equals the rate of respiration in a plant.

2. **Defining Photosynthesis and Respiration**:
- Photosynthesis is the process by which plants convert light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water.
- Respiration is the process by which plants convert glucose into energy, using oxygen and releasing carbon dioxide as a byproduct.

3. **Identifying the Conditions**: At the compensation point, the amount of carbon dioxide produced during respiration is equal to the amount of carbon dioxide consumed during photosynthesis. This means that there is no net gain or loss of carbon dioxide in the plant.

4. **Light Intensity's Role**: The compensation point is influenced by light intensity. As light intensity increases, the rate of photosynthesis also increases until it reaches a saturation point where it can no longer increase despite further increases in light intensity.

5. **Variability Among Species**: The compensation point can vary among different plant species and can also change in response to environmental factors like temperature and light conditions.

6. **Conclusion**: Therefore, the correct answer to the question is that the compensation point is the value of a factor where photosynthesis equals the rate of respiration.

### Final Answer:
Compensation point is the value of a factor where there is **photosynthesis equal to the rate of respiration**.

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