3
Question
Leaf primordium grows into adult lamina by means of
Leaf primordium grows into adult lamina by means of
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Solution
The correct option is C First apical and then, marginal meristem
Plants have three types of meristems, the apical meristem, the intercalary meristem and the lateral meristem. Leaves are derived from shoot apical meristem which swells to form undifferentiated leaf primordium which divides into two systems that develop leaf blades and leaf sheaths. The growth of leaf blades occurs due to cells division but is mainly from cell elongation. The flattened blade form is derived from the marginal meristem present at the margins of leaf axis. Meristem present at the sides and causes increase in girth of the plant is termed as lateral meristem and is not involved in leaf formation.
Therefore, the correct answer is option C.
Plants have three types of meristems, the apical meristem, the intercalary meristem and the lateral meristem. Leaves are derived from shoot apical meristem which swells to form undifferentiated leaf primordium which divides into two systems that develop leaf blades and leaf sheaths. The growth of leaf blades occurs due to cells division but is mainly from cell elongation. The flattened blade form is derived from the marginal meristem present at the margins of leaf axis. Meristem present at the sides and causes increase in girth of the plant is termed as lateral meristem and is not involved in leaf formation.
Therefore, the correct answer is option C.
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