Approximately how much percent of insects are phytophagous?

Options

A. 15
B. 25
C. 35
D. 60

Answer

To solve the question regarding the percentage of insects that are phytophagous, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Phytophagous":**
- Phytophagous insects are those that feed on plant material, specifically the sap of green plants. This is crucial to understand the context of the question.

2. **Refer to Scientific Surveys:**
- According to scientific surveys and studies, a significant portion of the insect population is classified as phytophagous.

3. **Identify the Percentage:**
- Based on the surveys mentioned, it has been established that approximately 25% of all insects are phytophagous.

4. **Conclusion:**
- Therefore, the answer to the question is that approximately 25% of insects are phytophagous.

### Final Answer:
Approximately 25% of insects are phytophagous.

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