Answer:
Alveoli
Explanation:
The smallest branches are called bronchioles and at the end of these are your air sacs (alveoli).
Consequently plant roots will get more moisture with less effort. It also improves soil structure due to alternate drying and cooling and soil aeration which helps in multiplication of micro-organisms. This is the reason that farmers plough their field during summer. These are reasons why farmers plough their fields during the summer.
Hope this helps! :3
~Kana ^^
I think you forgot to give the options from which the correct answer can be chosen. I have researched based on your question and arrived at the correct answer that i am giving below. The guard cells close the stomata whenever it is filled with water is the false statement regarding guard cells. I hope the answer helps.
