NEET Biology question

All the following statements regarding sieve tube elements are true except

(A)Their end walls have perforated sieve plates which become impregnated with lignin at maturityCorrect
(B)They possess peripheral cytoplasm as well as a large vacuole
(C)They have distinct proteinaceous inclusions, the P-proteins are seen evenly distributed throughout the lumen
(D)Long, slender, tube-like structures arranged in longitudinal series

Answer: (A)

Solution

Sieve tube elements have end walls (sieve plates) with perforations that, when they become non-functional, are impregnated with callose, not lignin; lignification would be inconsistent with their function as a living conducting cell. Option (B),

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Question ID VK-105278