Micronutrients are present in plant tissues in concentrations less than ____of dry matter.

Options

A. 1 m mole `Kg^(-1)`
B. 10 m mole `Kg^(-1)`
C. 0.1 m mole `Kg^(-1)`
D. 2 m mole `Kg^(-1)`

Explanation

To answer the question regarding the concentration of micronutrients in plant tissues, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Micronutrients**: Micronutrients are essential minerals required by plants in small amounts for their growth and development. They include elements such as Boron, Zinc, Manganese, Iron, Copper, Molybdenum, and Chlorine.

2. **Identify the Concentration**: The question asks for the concentration of these micronutrients in plant tissues, specifically in terms of dry matter.

3. **Determine the Threshold**: It is established that micronutrients are present in concentrations less than 10 millimoles per kg of dry matter. This means that in any given kilogram of dry plant matter, the amount of micronutrients does not exceed 10 millimoles.

4. **Conclude the Answer**: Therefore, the answer to the question is that micronutrients are present in plant tissues in concentrations less than **10 millimoles per kg of dry matter**.

### Final Answer:
Micronutrients are present in plant tissues in concentrations less than **10 millimoles per kg of dry matter**.

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