Assertion: Opening and closing of stomata is controlled by guard cells.
Reason: Shrinking of guard cells results in the opening of stomatal pore.

Only assertion is wrong.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Only reason is wrong.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both assertion and reason are wrong.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both assertion and reason are true.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Only reason is wrong.
The stomatal opening or the stoma is a pore that is surrounded by the guard cells. The opening and closing of the pore is a function of the guard cells. The guard cells swell when water flows into them, causing the stomatal pore to open. Similarly the pore closes if the guard cells shrink.

Suggest Corrections

Similar questions

Q. Assertion: Opening and closing of stomata is controlled by guard cells.
Reason: Shrinking of guard cells results in the opening of stomatal pore.

The opening and closing of the stomatal pores depends upon :
(a) oxygen (b) water in guard cells (c) temperature (d) concentration of $C O_{2}$ in stomata

Q. How do the guard cells regulate opening and closing of stomatal pores?

Q. Which of the following statement is correct regarding opening and closing of stomata?
(i) stomata opens when guard cells are turgid.
(ii) stomata closes when guard cells are turgid.
(iii) stomata opens when guard cells are flaccid.
(iv) stomata closes when guard cells are flaccid.

Q. Guard cells control opening and closing of stomata.

Join BYJU'S Learning Program

Assertion: Opening and closing of stomata is controlled by guard cells. Reason: Shrinking of guard cells results in the opening of stomatal pore.

Assertion: Opening and closing of stomata is controlled by guard cells.
Reason: Shrinking of guard cells results in the opening of stomatal pore.