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

Answer

2

Explanation

Distinct proteinaceous inclusions, P-proteins are seen evenly distributed throughout the lumen of the sieve tube. Callose are carbohydrates.