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What mechanism causes the stoma to open when the guard cells are on good conditions?
Wiki User
∙ 11y ago
when water flows the guard cells swell up and open and when the guard cells shrink the stomatal pore closes.
During sunlight hours, K+ (potassium) ions enter the guard cells, causing a drop in their water potential. Sugar produced via photosynthesis also decreases water potential. Water is then taken in through osmosis. Guard cells swell up and become turgid - stomas open.
At night, K+ ions leave the guard cells, causing an increase in water potential. Water leaves the plant. Guard cells then become flaccid, straighten up and the stoma closes. This way, the amount of water escaping from the leaf is controlled.
Wiki User
∙ 11y ago
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Which process illustrates a feedback mechanism in plants?
A process that illustrates a feedback mechanism in plants is when the guard cells change the size of a leaf's openings to control gas exchange. Guard cells are located in the epidermis of leaves.
The absorption of water by the guard cells causes the pores to?
close and regulate water loss
What cells guard the opening and closing of the stomata?
Stomatal pores in plants regulate the amount of water and solutes within them by opening and closing their guard cells using osmotic pressure. Guard cells and adjacent subsidiary cells are involved in opening and closing of stomata.
What cells regulate the amount of water vapor that passes through the stoma?
A stoma is simply the space between two cells called guard cells.The guard cells are specialized cells of the leaf's epidermis. The guard cells have unevenly thickened walls. When their vacuoles contain the maximum amount of water, turgor causes the cells to bend, leaving a space, the stoma, between them.When the osmotic pressure falls, the cells partially collapse, like partly-deflated balloons, closing the stoma.The variations in turgor in guard cells are brought about by varying concentrations of potassium ions in the cells.
What are the names of the specialized cells that control the aperture of the hole of the stomata?
These are called the guard cells.
What mechanism causes stomates to open when the guard cells are in good conditions?
The reversible uptake and loss of potassium ions (K+)
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.
Which process illustrates a feedback mechanism in plants?
A process that illustrates a feedback mechanism in plants is when the guard cells change the size of a leaf's openings to control gas exchange. Guard cells are located in the epidermis of leaves.
Under what conditions would the guard cells close the stomates?
To prevent excess water loss through transpiration - normally when the weather is extremely hot or there is a lack of ground water. This is a regulatory mechanism to prevent dehydration.
The absorption of water by the guard cells causes the pores to?
close and regulate water loss
What is the relationship between guard cells and stomata?
Guard cells are cells on the edges of the stomata of a leaf. The stomata are very small pores that control water loss and keep the plant from drying out. When Abscisic Acid (ABA) - a stress hormone - is present, the Potassium ions (K+ ions) from the guard cells leave the guard cells for an unknown reason. This causes the stomata to close. Basically, guard cells assist stomata in opening/closing
What cells guard the opening and closing of the stomata?
Stomatal pores in plants regulate the amount of water and solutes within them by opening and closing their guard cells using osmotic pressure. Guard cells and adjacent subsidiary cells are involved in opening and closing of stomata.
Which structure controls transpiration?
guard cells
How plants open and close the stomata?
A chain of events leads to an increase in the concentration of sugar in the cell sap in the vacuole of guard cell. osmotic potential of cell sap decreases and guard cells withdraw water from the neighboring cells. this increases turgid pressure of the guard cells it swells up.the swelling of the outer wall causes the guard cells to curve away from each other so increases the gap between them stomata opens). and when guard cells lose water, they become flaccid and comes closer thus stomata closes.
What cells regulate the amount of water vapor that passes through the stoma?
A stoma is simply the space between two cells called guard cells.The guard cells are specialized cells of the leaf's epidermis. The guard cells have unevenly thickened walls. When their vacuoles contain the maximum amount of water, turgor causes the cells to bend, leaving a space, the stoma, between them.When the osmotic pressure falls, the cells partially collapse, like partly-deflated balloons, closing the stoma.The variations in turgor in guard cells are brought about by varying concentrations of potassium ions in the cells.
What is the of guard cells?
the function of guard cells are that they control the opening and closing of the stoma
What are the names of the specialized cells that control the aperture of the hole of the stomata?
These are called the guard cells.
