Correct sequence of different phases of growth is

Options

A. division - differentiation - elongation
B. division - elongation - differentiation
C. differentiation - division - elongation
D. elongation - differentiation - division

Answer

To determine the correct sequence of different phases of growth in plants, we need to understand the three primary stages involved in plant growth. Here’s a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Understanding Growth in Plants**:
- Growth in plants is defined as an irreversible increase in size. This process involves three main stages: cell division, cell elongation, and cell differentiation.

2. **Cell Division (Proliferation)**:
- The first phase of growth is cell division. This process increases the number of cells in the plant. It involves karyokinesis (the division of the nucleus) followed by cytokinesis (the division of the cytoplasm). This results in more cells being available for further growth.

3. **Cell Elongation**:
- The second phase is cell elongation. After cells have divided, they begin to elongate, which contributes to the overall size of the plant organs and tissues. During this phase, the protoplasm and vacuoles within the cells expand, allowing the cells to grow in size.

4. **Cell Differentiation**:
- The final phase is cell differentiation. This stage occurs after cell division and elongation, where the cells begin to specialize into different types of tissues with specific functions. Differentiation can happen at the cellular level, tissue level, organ level, and even at the organism level.

5. **Correct Sequence**:
- Based on the above understanding, the correct sequence of the different phases of growth is: **Cell Division → Cell Elongation → Cell Differentiation**.

### Conclusion:
- Therefore, the correct answer to the question is **Option B: Division, Elongation, and Differentiation**.