Stoma function

Question 1

how does stoma open

and close

Answer 1

When K+ ions move into guard cells beside epidermal cells, water moves with it by osmosis causing guard to swell, opening stomata

When k+ ions move out guard cells, water follows by osmosis, causing guard cells to sag, closing stomata.

Question 2

What percent of water loss is stomata responsible for

Answer 2

85% even though they only cover 1 to 2 percent of leaves

Question 3

What is the stomatas role in photosynthesis

Answer 3

allow Co2 to diffuse when photosynthesis takes place for calvin cycle

Question 4

what is transpiration pull

Answer 4

suction force that Pulls up the groundwater in an upwards direction. The Plant, for Photosynthesis, utilizes

Question 5

What is the process called that flows water in and out the stomata

Answer 5

osmosis

Question 6

What is the importance of the Stomata

Answer 6

 stomata create a “transpiration pull” through water loss
that draws water, minerals, and other key substances from the roots up to the leaves where they are used.

 Transpiration also provides a cooling effect that prevents leaves from heating to avoid denaturing

 Stomata also allow CO 2 to diffuse into the mesophyll where photosynthesis takes
place.