Growth in plant organs is

Options

A. Qualitative and extrinsic
B. Quantitative and intrinsic
C. Qualitative and intrinsic
D. Quantitative and extrinsic

Answer

To answer the question "Growth in plant organs is," we need to analyze the options provided and understand the nature of growth in plants.

### Step-by-Step Solution:

1. **Understanding Growth in Plants**:
- Growth in plants refers to the irreversible increase in size and number of cells. This means that once a plant grows, it cannot revert back to its previous state.

2. **Identifying the Nature of Growth**:
- Growth can be classified as either **qualitative** or **quantitative**.
- **Qualitative growth** refers to changes in the quality or characteristics of the plant (e.g., development of flowers, fruits, and leaves).
- **Quantitative growth** refers to measurable changes, such as an increase in height or biomass.

3. **Intrinsic vs. Extrinsic Factors**:
- Growth can also be classified as **intrinsic** or **extrinsic**.
- **Intrinsic growth** is driven by internal factors, such as genetic programming and hormonal influences.
- **Extrinsic growth** is influenced by external factors, such as environmental conditions (light, water, nutrients).

4. **Analyzing the Options**:
- **Option 1**: Qualitative and extrinsic - This is incorrect because growth is primarily driven by internal factors.
- **Option 2**: Quantitative and intrinsic - While growth can be quantitative, it does not fully capture the qualitative aspect of growth.
- **Option 3**: Qualitative and intrinsic - This option correctly identifies that growth improves the quality of the plant and is driven by internal factors.
- **Option 4**: Quantitative and extrinsic - This is also incorrect for the same reasons as option 1.

5. **Conclusion**:
- The correct answer is **Option 3: Qualitative and intrinsic**. Growth in plant organs is characterized by improvements in quality and is driven by internal processes.