Question

When the guard cells swell due to the entry of water the stomata gets __________ due to the osmotic potential.

• A. Closed
• B. Flacid
• C. Open
• D. Rigid

Answer 1

The correct option is C

Open

The correct option is C.

Explanation of correct option:

1. Stomata are the specialized opening present in the epidermis of plant cells.
2. Stomata have a stoma, which is a tiny pore surrounded by guard cells.
3. They aid in the flow of gases between the atmosphere and plants.
4. Guard cells regulate the opening and closing of stomatal holes, which are controlled by the process called osmosis.
5. The entry of water into the stomata makes guard cells swell which leads to the opening of the stomata.
6. The stomata close when the guard cells lose water and constrict, becoming flaccid and straight.

Explanation of incorrect options:

Option A:

The stomata close when the guard cells lose water and constrict, becoming flaccid and straight.

Option B:

When the guard cell loses water they become flaccid leading the stomata to close.

Option D:

When the water enters the guard cells they become rigid, and stomata will open.

Final answer: When the guard cells swell due to the entry of water the stomata get open due to the osmotic potential.