Fill in the blanks
(a) Cork cells possess ……… on their walls that makes them impervious to gases and water.
(b) ……… have tubular cells with perforated walls and are living in nature.
(c) Bone posses a hard matrix composed of …… and ……. .

Fill in the blanks (a) Cork cells possesses……... on their walls that makes it impervious to gases and water. (b)…….have tubular cells with perforated walls and are living in nature. (c) Bone possesses a hard matrix composed of…….. And …….. .

Fill in the blanks (a) Cork cells possesses……... on their walls that makes it impervious to gases and water. …….have tubular cells with perforated walls and are living in nature. (c) Bone possesses a hard matrix composed of…….. And …….. .

The cells of Bark are dead and have a chemical in their walls that makes them impervious to gases and water.

Cork cells contain a waxy substance called .............that makes it impervious to water and gases.

Which of the following components makes the cork cells impervious to water and gases ?

Assertion (A): Deposition of suberin on the walls makes them impermeable to water. Reason (R): Cell wall is multilayered with usually three layers.

Fill in the blanks : The cell wall of Diatoms is composed of ______.

Assertion: Cork or phellem is impervious to water. Reason: Cork has suberin deposition in the cell wall.