how many elements out of those discovered are seen in different plants?

Options

A. 17
B. 60
C. 105
D. 150

Answer

To answer the question of how many elements out of those discovered are seen in different plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Total Elements**: First, we need to recognize that there are a total of 105 elements that have been discovered.

2. **Elements Found in Plants**: Out of these 105 elements, it is noted that 60 elements can be found in various plants. This indicates that plants can utilize a significant number of the discovered elements.

3. **Essential Elements**: Among these, only 17 elements are classified as essential elements. Essential elements are those that are crucial for the plant's life cycle and metabolic processes. If any one of these essential elements is missing, the plant cannot survive.

4. **Classification of Nutrients**: The essential elements are further categorized into macronutrients and micronutrients.
- **Macronutrients**: These are required in larger quantities (more than 10 mmol per kg of dry matter). Examples include Nitrogen, Phosphorus, Potassium, Calcium, Magnesium, and Sulfur.
- **Micronutrients**: Also known as trace elements, these are required in smaller quantities (less than 10 mmol per kg of dry matter). Examples include Manganese, Boron, Copper, Nickel, and Chlorine.

5. **Conclusion**: The question specifically asks how many elements are seen in different plants. Based on the information provided, the answer is that 60 elements are found in plants.

### Final Answer:
The correct answer is **60 elements**.

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