Plant growth

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  • Plant growth
    • Meristems are groups of immature cells that are still capable of dividing. There are four types
      • 1) Apical meristems- located at the tips (apex) of roots and shoots
        • 2) Lateral bud meristems- Found in buds
          • 4) Lateral meristems- responsible for roots and shoots getting wider.
            • 5) Intercalary meristems- located between nodes
    • Cytokinins- Prevent senescing (aging and dying)
    • Auxins- The extent to which cells elongate is proportional to the concentration of auxins. Auxin first increases the stretchiness of the cell wall (by actively transporting H+ ions. The low pH provides optimum conditions for a wall loosening enzyme to work.

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