Inflorescence is

Options

A. arrangement of flowers on peduncle/floral axis
B. a system of branches bearing flowers
C. a branch bearing flowers in definite manner
D. All the above

Answer

### Step-by-Step Solution:

1. **Understanding Inflorescence**:
- Inflorescence refers to the arrangement of flowers on a floral axis. It is important to recognize that flowers are not just individual entities but are organized in specific patterns on a plant.

2. **Modified Shoot**:
- A flower is considered a modified shoot. This means that the structure of a flower has evolved from a typical shoot structure. The apical meristem, which is responsible for growth in plants, undergoes a transformation.

3. **Transformation of Apical Meristem**:
- The apical meristem changes into a floral meristem. This transformation is crucial as it initiates the development of flowers.

4. **Condensation of the Axis**:
- During the transition from a shoot to a flower, the internodes (the segments between leaves on a stem) do not elongate. Instead, the floral axis becomes condensed and thickened, which is a characteristic feature of inflorescence.

5. **Types of Inflorescence**:
- Inflorescences can be categorized into two main types:
- **Racemos**: This type has flowers arranged along an elongated axis, where the lower flowers bloom first.
- **Cymos**: In this arrangement, the flowers bloom in a more compact manner, often with the central flower blooming first.

6. **Conclusion**:
- Therefore, the definition of inflorescence can be summarized as the arrangement of flowers on the floral axis or peduncle.

### Final Answer:
Inflorescence is the arrangement of flowers on the floral axis or peduncle.

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