What is the Difference Between Apical and Lateral Meristems?

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The main difference between apical and lateral meristems lies in their location, function, and the type of growth they contribute to in plants. Here are the key differences:

  • Location: Apical meristems are located at the tips of stems and roots, while lateral meristems are found on the lateral sides of the stems.
  • Function: Apical meristems enable a plant to extend in length, giving rise to new leaves and flowers. Lateral meristems, also known as cambia, facilitate growth in thickness or width, primarily contributing to secondary growth.
  • Type of Growth: Apical meristems contribute to primary growth (taller and longer plant) by controlling root elongation and shoot elongation. Lateral meristems contribute to secondary growth (wider and thicker plant) by forming wood, bark, and other structures to support the plant's growth.

In summary, apical meristems are responsible for primary growth, extending the length of the plant, while lateral meristems are responsible for secondary growth, increasing the width and thickness of the plant.

Comparative Table: Apical vs Lateral Meristems

Apical and lateral meristems are two types of meristematic tissues responsible for the growth of a plant. Here is a table highlighting the differences between them:

Characteristic Apical Meristem Lateral Meristem
Location Tips of roots and shoots Sides of stems and roots
Function Responsible for primary growth, increasing the length of the plant Responsible for secondary growth, increasing the diameter of the plant
Cell Division Cells divide in one direction, i.e., to create new cells Cells divide in multiple directions, i.e., to create new cells and increase the girth of the plant
Derived Tissues Forms xylem, phloem, epidermis, and ground tissue Forms wood, inner bark, and outer bark
Examples Vascular cambium, cork cambium none provided

Apical meristems are located at the tips of roots and shoots, and they are responsible for primary growth, which increases the length of the plant. Lateral meristems, on the other hand, are located on the sides of stems and roots, and they are responsible for secondary growth, which increases the diameter of the plant.