is a couple of layers thick, made of narrow, thin walled and nearly rectangular cells. It cuts off cells on both sides. The outer cells differentiate into or , while the inner differentiate into or . The three together is called . Select the right sequence of words to complete the above.

Question

is a couple of layers thick, made of narrow, thin walled and nearly rectangular cells. It cuts off cells on both sides. The outer cells differentiate into or , while the inner differentiate into or . The three together is called . Select the right sequence of words to complete the above. (A) Phellogen, cork, phellem, secondary cortex, phelloderm, periderm (B) Phellem, phelloderm, cork, secondary cortex, phellogen, periderm (C) Phellogen, cork, periderm, secondary cortex, phellem, phellem (D) Phellem, secondary cortex, periderm, cork, phellogen, phelloderm

Tardigrade Admin · Accepted Answer

Phellogen is thick with a couple of layers. It is made of narrow, thin-walled and nearly rectangular cells. Phellogen cuts off cells on both sides. The outer cells differentiate into cork or phellem, whereas the inner cells differentiate into secondary cortex or phelloderm. The cork is impervious to water due to suberin deposition in the cell wall. The cells of the secondary cortex are parenchymatous. Phellogen, phellem and phelloderm are collectively known as periderm.