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Difficulty: EasyGrowth, Development, and Metamorphosis

Match each type of plant meristematic tissue on the left with its correct primary growth role on the right.

  • Apical meristemDrives primary growth and elongation at root and shoot apexes
  • Lateral meristemDrives secondary growth causing increase in stem girth and diameter
  • Intercalary meristemDrives rapid internodal extension and regrowth at nodes in grasses

Answer

Apical meristem matches elongation at root and shoot apexes; Lateral meristem matches increase in stem girth; Intercalary meristem matches internodal extension at nodes.
Apical meristems produce length extension at growing tips, lateral meristems increase stem girth through secondary thickening, and intercalary meristems enable growth at internodes in monocots.

Step-by-Step Solution

1
Identify the function of apical meristem
Apical meristems drive growth in length at shoot and root tips.
Active cell division at the apex produces primary plant tissues and extends plant height.
2
Identify the function of lateral meristem
Lateral meristems drive growth in thickness or diameter.
Cambium tissue layers divide laterally to form secondary xylem, secondary phloem, and cork.
3
Identify the function of intercalary meristem
Intercalary meristems drive growth at internodes and leaf bases.
Found predominantly in grasses, these meristems allow rapid stem elongation even after grazing.

Key Concept

Types of plant meristems and their specific developmental functions
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Topics

Growth, Development, and Metamorphosis

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