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InterviewSolution
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Define the term Cork or Phellem. |
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Answer» Cork or Phellem • In older roots and stems, tissues at the periphery become cork cells or phellem cells. • Cork is made up to dead cells with thick walls and do not have any intercellular spaces. • The cell walls in cork deposit waxy substance called as suberin. • The cells of cork become impermeable to water and gases due to the deposition of suberin. • The cork cells are without any protoplasm but are filled with resins or tannins. |
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