Most herbaceous plants have only about 10 to 15 percent of it's fresh weight as dry matter

Answer

**Step-by-Step Solution:**

1. **Understanding Fresh Weight and Dry Matter**:
- Fresh weight refers to the total weight of a plant including all its water content.
- Dry matter is the weight of the plant after all the water has been removed, which includes all the organic and inorganic materials.

2. **Water Content in Herbaceous Plants**:
- Herbaceous plants, which are non-woody plants, typically have a high water content.
- The statement indicates that these plants have about 10-15% of their fresh weight as dry matter, implying that the remaining 85-90% is water.

3. **Role of Water in Plants**:
- Water is essential for physiological activities in plants. It serves as a solvent for nutrients and is crucial for metabolic processes.
- The protoplasm of cells, which is the living part of the cell, is primarily composed of water, where various substances are dissolved.

4. **Example of Watermelon**:
- Watermelon is cited as an example, containing about 92% water. This illustrates the high water content in many herbaceous plants.

5. **Variation in Water Distribution**:
- The distribution of water can vary within different parts of the plant. For instance, soft parts of herbaceous plants contain more water compared to woody parts.

6. **Water in Seeds**:
- Even seeds, which may appear dry, contain water necessary for respiration and metabolic activities.

7. **Conclusion**:
- The statement that most herbaceous plants have only 10-15% of their fresh weight as dry matter is confirmed to be true based on the understanding of water's role in plants.

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