Question

Assertion assertion the opening and closing of the pores is the function of the guard cell reason stomatal pores are the site of exchange of gases by diffusio

Answer 1

Q) Assertion-the opening and closing of the pore is a function of the guard cells. Reason-stomatal pores are the site for an exchange of gases by diffusion.

a) Both assertion and reason are CORRECT and the reason is the CORRECT EXPLANATION of Assertion.

b) Both assertion and reason are CORRECT, but the reason is NOT THE CORRECT explanation of assertion

c) Assertion is CORRECT, but the reason is INCORRECT

d) Assertion is INCORRECT, but the reason is CORRECT.

e) Both assertion and reason are INCORRECT.​

 

Option (b) Bothe assertion and reason are correct, but the reason is NOT THE CORRECT explanation of the assertion.

• The transmission of gases during respiration and photosynthesis is concerned by the stomata.
• During this type of transmission water loss also happens.
• The change in ionic and water concentration causes the opening and closing of the guard cells.
• During the daytime, the stomatal pores are open commonly.
• But in the desert area, it tends to open at night time also.

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Answer 2

Answer:

Both assertion and reason are correct, but the correct explanation for stomatal pores is not reason.

Explanation:

• Stomata are involved in the exchange of gases during respiration and photosynthesis. During transpiration, water is lost as well.
• Changes in ionic and water concentration cause guard cells to open and close.
• Stomatal pores normally open during the day, but in desert locations, they open at night.
• The latter situation arises in order to reduce water loss.

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