Growth in plants is

Options

A. only determinate
B. only indeterminate
C. mostly determinate
D. both determinate and indeterminate.

Explanation

**Step-by-Step Solution:**

1. **Understanding Plant Growth**: Growth in plants can be classified into two main types: determinate and indeterminate growth.

2. **Defining Indeterminate Growth**: Indeterminate growth refers to continuous growth throughout the life of the plant. This means that certain parts of the plant, such as the roots and shoots, can keep growing indefinitely.

3. **Defining Determinate Growth**: Determinate growth, on the other hand, is limited growth. Once a certain organ or structure has reached its full size, it stops growing.

4. **Role of Meristems**: Meristems are the regions in plants where active cell division occurs. There are different types of meristems:
- **Apical Meristems**: Located at the tips of roots and shoots, these are responsible for the primary growth of the plant.
- **Lateral Meristems**: These contribute to the secondary growth (thickness) of the plant.
- **Intercalary Meristems**: Found at the base of leaves or internodes, these allow for regrowth after cutting.

5. **Classification of Meristems**:
- **Indeterminate Meristems**: Apical meristems and intercalary meristems are considered indeterminate because they continue to divide and contribute to growth throughout the life of the plant.
- **Determinate Meristems**: Some meristems may differentiate into specific organs (like leaves or flowers) and stop growing once they reach maturity.

6. **Conclusion**: Overall, plant growth is generally indeterminate due to the presence of meristems that allow for continuous growth. However, some parts of the plant can exhibit determinate growth. Therefore, the correct answer is that plant growth can be both determinate and indeterminate.

**Final Answer**: Both determinate and indeterminate.

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