Explain how guard cells limit water loss from a plant on a hot, dry day. How can this be harmful to the plant?

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Hello. Everyone here's our next problem. It says high rates of transpiration during water stress conditions may result in the wilting and even death of plants. Several plants blank water loss by blank. There's Tamada when the environment is unfavorable. Well we're talking about problems caused to the plant um as a result of high rates of transpiration. And that's because transpiration is that process of water evaporating through this tomato um from the aerial parts of the plant. So if we're talking about the plant doing poorly because it's losing a lot of water. Our first blank says several plants blank water loss. Well obviously we want to reduce the amount of water loss. So let's look at our answer choices. Choice A. Says increase water loss. We don't want to increase water loss so we can just eliminate choice A right away Choice B says enhance water loss will enhance would make it make it greater. So again not our answer. Their choice C. Says decrease. That's correct. So that could be our answer and choice D. Says reduce water loss. So that could also be correct as well. So now let's look at our second blank says by several plants, reduce water loss by blank. There's tamada. Well since water is evaporating out the Samata um to reduce that water loss. This tomato can be closed. So let's look again back at our answer choices. We've got C. And D left so choice C. Has decreased water loss by opening Mr. Mata. But opening Mr. Model will increase water loss caused a higher rate of transpiration. So C. Is not correct. Then we've got left D. Reduce water loss by closing this to Mata. This is correct. That's how you would reduce water loss. So Choice D. Is our correct answer. Several plants Choice D. Reduce water loss by closing their Samata when the environment is unfavorable. See you in the next video.

Explain how guard cells limit water loss from a plant on a hot, dry day. How can this be harmful to the plant?

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Key Concepts

Guard Cells

Transpiration

Water Stress