You buy a new house and the front yard has some really nice rose bushes, but they are surrounded by lots of weeds! You don't really want to try and dig them out by hand and your nice new neighbor comes over with a bottle of weed killer. He says it shouldn't kill your roses, but you, knowing that weeds and rose are pretty similar physiologically decide to do some research. You find out the active ingredient in the weed killer causes the stomata close when in contact with the chemical.
What would be the results of the chemical being sprayed on your roses? Explain which parts of photosynthesis would be affected, what those effects would be, and how would the plant be affected? Would it be likely to hurt your roses?
Stomata are structures on a plant that control gas exchange. The stomata are surrounded by cells called guard cells which are responsible for controlling the opening and closing of the stomata due to ion fluctuations. They also release water vapor into the atmosphere. Because the weed killer has an active ingredient that closes the stomata of plants this would be detrimental to the growth of the plant.
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