Which of the following statement is incorrect ?

Options

A. In a dicot stem, the pericycle is usually multilayered.
B. Wood is the common name used for secondary xylem.
C. Peripheral cytoplasm,alarge vacuole and a prominent nucleus, all are absent in a mature sieve tube element.
D. Lenticels are the aerating pores presentin bark of plants and are associated with gaseous exchange.

Answer

C

Explanation

Each mature sieve element has thin or thick cellulose wall surrounding highly albuminous and viscous content. Cytoplasm occurs in the form of thin lining enclosing endoplasmic retuculum and dictyosomes are absent. Vacuole is filled with albuminous substances.