Multiple choice

As the roots and stems grow older with time, tissues at the periphery become ________ cells.

  1. sclereids

  2. guard

  3. cork

  4. epithelial

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

As roots and stems grow older with time, tissues at the periphery become cork cells. Cork cells are dead, have no intercellular spaces and the cell walls are heavily thickened by the deposition of suberin. They prevents loss of water.