Answer:-

Your Answer Is Option a) Daytime for exchange of gases.

Explanation:-

• Stomata opens at daytime to take carbon dioxide and release oxygen so that by using sunlight (Which came only in daytime) and carbondioxide the plant can make their own food. And this process is also known as photosynthesis.

More about stomatas:-

• Stomatas are the small pores which are present on the surface of leaf of the plans.

• There are two functions of stomata:-

• The first one or the main functuon of the stomata is that it helps the plant in exchange of gases.

• The second function is that it prevent the excess loss of water from the plant during the process of transpiration.

Verified answer

Answer:

during daytime for exchange of gases