Question

Which organelle gives plants the ability to grow tall?

chloroplasts
vacuoles
cytoplasm
cell walls
mitochondria

Answer 1

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.

Answer 2

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