Question

Sieve tubes possess

• A. Simple oblique end walls
• B. Perforated oblique septa
• C. Perforated longtudinal walls
• D. Apical oblique plates

Answer 1

Answer: (B)

Perforated oblique septa

Sieve cells/sieve tube elements are living and thin walled. In Angiosperm plants sieve tube elements are arranged with their ends and form sieve tube. Sieve plate (oblique transverse perforated septa) is present between the two sieve tube elements at their end wall. It is porous. Materials are transported through these pores.

So, the correct answer is 'Perforated oblique septa.'