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Which one of the following is not a lateral meristem?
A
Intercalary meristem
B
Intrafascicular cambium
C
Interfascicular cambium
D
Phellogen
Detailed Solution
Lateral meristems occur along the sides of roots and stems, parallel to the long axis, and are responsible for the increase in girth (secondary growth).
Fascicular (intrafascicular) vascular cambium, interfascicular cambium and cork cambium (phellogen) are examples of lateral meristems.
The intercalary meristem occurs between mature tissues, at the bases of internodes or leaves (as in grasses); it increases the length of the organ and regenerates parts removed by grazing herbivores.
Apical and intercalary meristems are primary meristems.
Hence the intercalary meristem is not a lateral meristem.
Fascicular (intrafascicular) vascular cambium, interfascicular cambium and cork cambium (phellogen) are examples of lateral meristems.
The intercalary meristem occurs between mature tissues, at the bases of internodes or leaves (as in grasses); it increases the length of the organ and regenerates parts removed by grazing herbivores.
Apical and intercalary meristems are primary meristems.
Hence the intercalary meristem is not a lateral meristem.