In cymose inflorescence

Options

A. Main axis terminates in a flower
B. Main axis is of indefinite growth
C. Flower are borne in basipetal order
D. Both [a] and [c]

Answer

### Step-by-Step Solution:

1. **Understanding Cymose Inflorescence**:
- Cymose inflorescence is a type of flower arrangement where the main axis of the plant terminates in a flower. This means that the growth of the main stem is limited, and it does not continue indefinitely.

2. **Main Axis and Flower Formation**:
- In cymose inflorescence, the main axis will stop growing and will produce a flower at its tip. This is a defining characteristic of cymose inflorescence.

3. **Flower Arrangement**:
- The flowers in cymose inflorescence are arranged in a way that the oldest flowers are at the base and the younger flowers are at the top. This is in contrast to racemose inflorescence, where the oldest flowers are at the top.

4. **Finite Growth of Main Axis**:
- It is important to note that the main axis in cymose inflorescence does not exhibit indefinite growth. Instead, it has a finite length, which is a key feature distinguishing it from other types of inflorescence.

5. **Conclusion on Statements**:
- Based on the above points, we can conclude that:
- The statement that the main axis terminates in a flower is correct.
- The statement regarding the arrangement of flowers being in a base order is also correct.
- The statement about the main axis having indefinite growth is incorrect, as it is finite.
- Therefore, the correct option is that both the first and third statements are correct.

### Final Answer:
The correct option regarding cymose inflorescence is that the main axis terminates in a flower, and the flowers are arranged such that the oldest flowers are at the base.

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