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Is a guard cell a tissue a organ or a cell?
A guard cell is a type of cell found in the epidermis of plant leaves. It is not a tissue or an organ; rather, it is a specialized cell responsible for regulating the opening and closing of stomata to control gas exchange and water loss in plants.
What is the difference between a human nerve cell and plant guard cell?
A human nerve cell is a specialized cell in the nervous system that transmits electrical signals, while a plant guard cell is a specialized cell in plants responsible for regulating gas exchange and water loss through openings called stomata. Nerve cells are found in animal tissues, while guard cells are unique to plants.
What is the function of a guard cell in plants?
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.
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 is the special features of guard cell?
Guard cells contain chloroplasts for photosynthesis, have a kidney bean shape that allows for stomatal opening and closing, and regulate gas exchange in plants by controlling the size of stomatal pores.
Do all plants have guard cells?
No, not all plants have guard cells. Guard cells are specialized cells found in the epidermis of leaves and stems of plants, particularly in vascular plants, that control the opening and closing of stomata. Non-vascular plants like mosses and liverworts do not have true vascular tissue or stomata with guard cells.
In what cell does most photosynthesis happen?
guard cell and palliside cell
What part of a cell is like a door or security guard?
the cell membrane is like a guard because it only allows chemicals in and out of the cell
Do plants have a cell wall and no cell membrane?
plants have cell walls and cell mebranes
Are guard cells in a animal cell?
Guard cells are not found in animal cells; they are unique to plant cells. Guard cells are specialized cells located in the epidermis of plant leaves and stems. Their main function is to regulate the opening and closing of stomata, small pores that allow for gas exchange and water loss in plants. The presence of guard cells is crucial for the adaptation of plants to changing environmental conditions.
Which cell helps in gas exchange in plants?
The main cell responsible for gas exchange in plants is the stomatal cell. Stomata are small openings on the surface of leaves and stems that are formed by two guard cells. The stomatal cells regulate the exchange of gases, such as carbon dioxide and oxygen, in and out of the plant through these openings.
When a potassium ion (K ) enters a guard cell it creates a solution of?
When a potassium ion (K+) enters a guard cell, it creates a solution with a higher osmotic potential inside the cell than outside. This influx of K+ ions increases the osmotic pressure within the guard cell and leads to the uptake of water, causing the guard cell to swell and ultimately leading to stomatal opening.
