Carl Maze (1915) divided mineral elements into two categories on the basis of

Options

A. quantity in which these are required
B. quality and action
C. toxicity they cause
D. path they travelled in plant.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about how Carl Maze categorized mineral elements in 1915. It is essential to identify the basis for this classification.

2. **Identifying the Categories**: Carl Maze divided mineral elements into two main categories: macronutrients and micronutrients. This classification is fundamental in understanding plant nutrition.

3. **Defining Macronutrients and Micronutrients**:
- **Macronutrients**: These are elements required by plants in larger quantities. Examples include nitrogen, phosphorus, and potassium.
- **Micronutrients**: These are required in smaller amounts but are still essential for plant growth. Examples include iron, manganese, and zinc.

4. **Basis of Classification**: The key aspect of Maze's classification is the quantity of the elements required by plants. Macronutrients are needed in larger quantities, while micronutrients are needed in smaller quantities.

5. **Selecting the Correct Option**: Based on the understanding that the classification is based on the quantity of the elements required by plants, the correct answer is:
- **Option A: Quantity in which these were required.**

**Final Answer**: Carl Maze (1915) divided mineral elements into two categories on the basis of **quantity in which these were required**.

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