Question

In the given figure, in which labeled part(s) the nucleus disappears at maturity?

• A. a
• B. b
• C. c
• D. Both b and c

Answer 1

The correct option is C c

Sieve tube members are a specialized type of elongated cell in the phloem tissue of flowering plants. These end at perforated plates are called sieve plates, through which a large number of cytoplasmic strands pass through. The cell has a large central vacuole with a thin peripheral protoplasm. The most remarkable feature is the complete absence of a nucleus upon maturity.

So, the correct answer is option C.