The period of growth is generally divided into
I. meristematic phase II. elongation phase III. death phase IV. maturation phase

Options

A. I, II, III, IV
B. I, III, IV only
C. II, III, IV only
D. I, II, IV only

Answer

To solve the question regarding the phases of growth, we will analyze the provided options and identify which ones are correct based on the understanding of plant growth.

### Step-by-Step Solution:

1. **Understanding Growth**:
- Growth in plants is defined as an irreversible and permanent increase in size, which can occur at the cellular level or in organs.

2. **Identifying the Phases of Growth**:
- Growth is generally divided into three main phases:
- **Meristematic Phase**: This is the first phase where cells are actively dividing. These cells are undifferentiated and capable of continuous division.
- **Elongation Phase**: In this phase, the cells that have divided begin to elongate. This is where the cells increase in size, contributing to the overall growth of the plant.
- **Maturation Phase**: This is the final phase where the cells have reached their maximum size and have undergone differentiation. The cells become specialized and develop specific functions.

3. **Evaluating the Options**:
- The options provided are:
- I. Meristematic Phase (Correct)
- II. Elongation Phase (Correct)
- III. Death Phase (Incorrect)
- IV. Maturation Phase (Correct)
- Based on the definitions and phases discussed, the correct phases of growth are the meristematic phase, elongation phase, and maturation phase.

4. **Conclusion**:
- The correct answer includes the phases: I (Meristematic Phase), II (Elongation Phase), and IV (Maturation Phase). The death phase is not considered a part of the growth period.

### Final Answer:
The correct phases of growth are:
- I. Meristematic Phase
- II. Elongation Phase
- IV. Maturation Phase