Question

Which one of the following statements pertaining to plant structure is correct?

• A. Cork lacks stomata but lenticels carry out transpiration.
• B. Passage cells help in transfer of food from cortex to phloem.
• C. Sieve tube elements possess cytoplasm but no nuclei.
• D. The shoot apical meristem has a quiescent centre.

Answer 1

The correct option is C Sieve tube elements possess cytoplasm but no nuclei.

Sieve tube elements are a type of specialized cells that are present in the phloem tissue of angiosperms. These elongated cells connect with other sieve tube cells and together form the sieve tube that performs the function of transporting carbohydrates. However, though not dead at maturity like the xylem vessel elements, these sieve tube elements lack a nucleus.

So, the correct answer is option C.