Question

As the guard cells become turgid, outward stretching of their inner walls, open the stomata.

• A. True
• B. False

Answer 1

The correct option is A True

When guard cells become turgid the inner wall cannot move in vertical direction or along the longitudinal axis. Neither it can move or stretch on inner side. This is because of extra cellulose deposition on inner wall and radial microfibrils emerging from the inner wall.
So as guard cells become turgid and pressure builds up, the outer wall is pushed outside, which pulls the inner wall towards outside, or radially outwards. This opens the stomatal pore.