Which of the following is not a feature of sieve tubes-

Options

A. These occur as long, slender tube-like structures, arranged in longitudinal series, and associated with the companion cells
B. Distinct proteinaceous inclusions, the callose are seen evenly distributed throughout the lumen of the sieve tube
C. Their end walls are perforated (sieve pores) in a sieve like manner to form the sieve plate
D. They possess a peripheral cytoplasm as well as a large vacuole

Explanation

To determine which of the following is not a feature of sieve tubes, we need to analyze the characteristics of sieve tubes based on the information provided.

### Step-by-Step Solution:

1. **Understanding Sieve Tubes**:
- Sieve tubes are part of the phloem, a complex vascular tissue in angiosperms. They play a crucial role in the transport of nutrients, particularly sugars.

2. **Identifying Features of Sieve Tubes**:
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