Cork cells are made impervious to water and gases by the presence of
  • suberin
  • lipids
  • cellulose
  • lignin
If the tip of sugarcane plant is removed from the field, even then it keeps on growing in length. It is due to the presence of
  • apical meristem
  • lateral meristem
  • cambium
  • intercalary meristem
Flexibility in plants is due to
  • sclerenchyma
  • chlorenchyma
  • parenchyma
  • collenchyma
A long tree has several branches. The tissue that helps in the side ways conduction of water in the branches is
  • parenchyma
  • xylem parenchyma
  • xylem vessels
  • collenchyma
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