Respuesta :

cell walls  gives plants the ability to grow tall  it gives  rigid structure that supports plant cells 
 it  help to determine and maintain the shape and structure of plant cells

The correct answer is option cell wall.

The cell wall elongation is a process initiated by the plant hormone auxin. Auxin promotes elongation by increasing the cell wall extensibility.

Auxin lower down the pH and low pH helps in the activation of cell wall protein known as expansins.

In this way cell wall elongation takes place.

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