In spadix inflorescence, peduncle is

Explanation

### Step-by-Step Solution:

1. **Understanding the Peduncle**: The peduncle is the stem or axis that supports the inflorescence. It connects the inflorescence to the main stem of the plant.

**Hint**: Remember that the peduncle is crucial for supporting the flowers.

2. **Identifying Spadix Inflorescence**: In spadix inflorescence, the flowers are arranged closely on a thick, fleshy axis. This type of inflorescence is characterized by having numerous sessile flowers.

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