Find the amount of macronutrients and trace elements that is present in plant tissues.

Answer

To find the amount of macronutrients and trace elements present in plant tissues, we can categorize them into two groups: macronutrients and micronutrients (trace elements).

### Step-by-Step Solution:

1. **Identify Macronutrients**:
- Macronutrients are essential nutrients that plants require in large amounts. The primary macronutrients include:
- Nitrogen (N)
- Phosphorus (P)
- Potassium (K)
- Calcium (Ca)
- Magnesium (Mg)
- Sulfur (S)

2. **Quantify Macronutrients**:
- The amount of macronutrients present in plant tissues is generally greater than 10 millimoles per kilogram of dry matter. This indicates that plants need these nutrients in significant quantities for their growth and development.

3. **Identify Micronutrients (Trace Elements)**:
- Micronutrients, also known as trace elements, are essential nutrients that plants require in smaller amounts. Examples include:
- Boron (B)
- Zinc (Zn)
- Manganese (Mn)
- Iron (Fe)
- Copper (Cu)
- Molybdenum (Mo)
- Chlorine (Cl)

4. **Quantify Micronutrients**:
- The amount of micronutrients present in plant tissues is typically less than 10 millimoles per kilogram of dry matter. This indicates that while these nutrients are crucial for plant health, they are needed in much smaller quantities compared to macronutrients.

5. **Conclusion**:
- In summary, macronutrients are present in amounts greater than 10 millimoles per kg of dry matter, while micronutrients are present in amounts less than 10 millimoles per kg of dry matter in plant tissues.