Question

When the guard cells lose water, they lose their turgidity and the stomata

• A. open.
• B. close.
• C. remains same.
• D. Disappears.

Answer 1

The correct option is B

close.

The correct option is B.

Explanation of the correct option :

1. When the guard cells swell and bulged outwards and the stomata open.
2. When the guard cells lose water, they lose their turgidity and the stomata will close.

Explanation of the incorrect option :

Option A :

When the guard cells swell and bulged outwards and the stomata open.

Option C :

1. The entry and exit of water into the guard cells regulate the opening and closing of the stoma.
2. So it does not remains the same when the guard cells lose water.

Option D :

Stomata will not disappear when the guard cells lose water.

Final answer: When the guard cells lose water, they lose their turgidity and the stomata close.