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i hve no idea.... this was my ques in the 1st place! can someone please answer it....
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∙ 13y ago
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∙ 10y agoPlants need to take in carbon dioxide to convert it into sugar, and that being a gas, is taken into the leaf cell through the stomata. If that is closed, photosyntesis is hindered.
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∙ 11y agoto decrease transpiration (evaporation)water loss
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∙ 11y agothe guard cell close the stomata, to prevent waterloss.
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∙ 7y agoPlants lose water through their stomata. If these remain open on a hot day then the plant may lose too much water.
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∙ 11y agoyuuiio
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∙ 11y agoCLOSED
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What is the function of the guard cells?
The function of the guard cells are that they help to regulate the rate of transpiration by opening and closing the stomata thus preventing excessive water loss. The guard cell opens when there is too much water. It is also adapted for gas exchange between plants and environment. For example, it opens during rainy days and closes when the weather is too dry or windy. They also control the size of the pore.
What do dry cells and wet cells have in common?
P
What is the role of guard cells in stomata?
To protect the stomas.Related Information:However, most plants do not have the aforementioned facility and must therefore open and close their stomata during the daytime in response to changing conditions, such as light intensity, humidity, and carbon dioxide concentration. It is not entirely certain how these responses work. However, the basic mechanism involves regulation of osmotic pressure.When conditions are conducive to stomatal opening (eg. high light intensity and high humidity), a proton pump drives protons (H+) from the guard cells. This means that the cells' electrical potential becomes increasingly negative. The negative potential opens potassium voltage - gated channels, and so an uptake of potassium ions (K+) occurs.To maintain this internal negative voltage, so that entry of potassium ions does not stop, negative ions balance the influx of potassium. In some cases chloride ions enter, while in other plants the organic ion malate is produced in guard cells. This in turn increases the osmotic pressure inside the cell, drawing in water through osmosis. This increases the cell's volume and osmotic pressure.Then, because of rings of cellulose microfibrils that prevent the width of the guard cells from swelling, and thus only allow the extra turgor pressure to elongate the guard cells, whose ends are held firmly in place by surrounding epidermal cells, the two guard cells lengthen by bowing apart from one another, creating an open pore through which gas can move.When the roots begin to sense a water shortage in the soil, abscisic acid (ABA) is released. ABA binds to receptor proteins in the guard cells' plasma membrane and cytosol, which first raises the pH of the cytosol of the cells and causes the concentration of free calcium ions (Ca2+) to increase in the cytosol, due to the influx from outside the cell and the release of Ca2+ from internal stores such as the endoplasmic reticulum and vacuoles.This causes the chloride (Cl-) and other inorganic ions to exit the cells. Secondly, this stops the uptake of any further K+ into the cells and subsequently the loss of K+. The loss of these solutes causes a reduction in osmotic pressure, making the cell flaccid, and so it closes the stomatal pores.Interestingly, guard cells have more chloroplasts than the other epidermal cells from which guard cells are derived. Explanations of the function of these chloroplasts' are controversial.See related links for explanation of terms.
What is Another name for dry cells is?
Batteries
Which biome has the greatest tolerance to dry conditions?
desert
Can guard cells carry out photosynthesis?
No Guard cells are cells that close when there is dry weather, preventing the leaf from becoming dehydrated
When dry environmental conditions exist guard cells reduce water loss from plants by closing the openings in their leaves This process is an example of a feedback mechanism that plants use in order?
maintain homeostasis.
What are the cells that control the openings on the underside of the leaf called?
The cells that control the openings (stomata) on the underside of the leaf are called Guard Cells.The guard cells are found on either side of each stoma. These guard cells can swell or shrink in size depending upon the environmental conditions.(Stomata are structures through which gas exchange occurs and evaporation of water from the leaves take place.)When the atmosphere has a high water content, the guard cells swell with water forcing the stoma to open and allows the exchange of gases. When the stoma is open, the plant also loses water through a process called transpiration (evaporation of water from the plant leaves).In dry atmospheric conditions, the guard cells shrink in size to close the stoma preventing further loss of moisture from the plant.
What happens to radio waves when the dry cells remove?
the radio tranmitted will be cut because they have none dry cell
Circular air currents that produce the moist conditions of the trophics and the dry conditions in many of the great deserts of the earth is called?
Hadley Cells.
What is the gatekeeper cell?
That would be the "guard cells". The stoma is an opening on the underside of many leaves and each stoma is bordered by a pair of guard cells that open and close the pore to allow for "transpiration" (the passage of water in either gaseous or liquid form into or out of the leaf). In hot, dry weather, the guard cells close to prevent water loss. In humid weather, the guard cells allow the pore to open and water can enter.
What are the circular air currents that produce the moist conditions of the tropics and the dry conditions in many of the great deserts of the earth called?
Not D - jetstreams And its not A. frontal systems. its hadley cells :)-anna
What happens if you put dry ice in your hands for more than a few seconds?
the dry ice in a way eats up your skin cells.
Do legumes like dry or moist conditions?
dry conditions
Can dry leaf adsorb carbon dioxide?
Depends on how little water. The guard cells may block the stomata cuticle, therefore no water. It may be open so it can absorb. depends on how dry (really or a bit)
What does not stimulate the opening of stomata?
Stomata are just openings made when guard cells swell. they swell with a lot of available water. when its dry they close up. dry weather causes them to close because the water evaporates.
What are large cells of certain grass that permit the leaves to roll up under dry conditions?
Bulliform cellls in grasses help rolling .
