0
The Guard cells control the openings of the stoma in plants. When light hits the guard cells, it caused the cell to pump potassium ions into the guard cells. As potassium is pumped into the guard cell, the water potential decreases. This drop in water potential causes the water from the intercellular spaces and surrounding cells to enter the guard cell increasing the turgidity and opening the stoma. The loss of potassium, and the increase in the relative water potential closes the stoma as the guard cell as they return to a flaccid state.
Wiki User
∙ 14y ago
gwen seah
chloroplast in the guard cells photosynthesise. light energy converted to chemical energy to pump potassium (k) into the epidermal cells around this lowers water potential of the guard cells. water from the epidermal cells enters the guard cells by osmosis. guard cells become turgid and have thicker cellulose walls which pull the stoma open
Wiki User
∙ 9y agoGuard cells are found in the skin of leaves and stems. These cells maintain balance by bending, shrinking, and stretching as necessary for the water to flow through.
Wiki User
∙ 11y agoGuard cells regulate the opening and closing of the stomata.
Wiki User
∙ 11y agoThey control the amount of water entering and leaving the leaf by altering their shape in response.
Wiki User
∙ 14y agoit expands by taking up water creating an opening
Wiki User
∙ 11y agoBy increasing and decreasing osmotic potential of cell sap of gaurd cells the opening and closing of stomata take place.
Wiki User
∙ 9y agowhoever answered is wrong
Add your answer:
Earn +20 pts
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.
The absorption of water by the guard cells causes the pores to?
close and regulate water loss
Does water enters the plant through stomata?
The cells that regulate how much air and water pass through the stomata are called guard cells.
What is the stomata?
---- Stomata are microscopic pores found on the under side of leaves. You will find the stomata in the epidermal tissue. The stomata is bounded by two half moon shaped guard cells that function to vary the width of the pore. Each guard cell contains chloroplasts. The glucose concentration of the the cells changes with the photosynthetic activity and therefore it is the guard cells that regulate the opening and closing of the stoma. ----
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.
How do guard cells regulate the exchange of gases between a leaf and the air?
The guard cells regulate the exchange of gases between the leaf and air through the use of openings called stomatal pores.
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.
Why do you think guard cells are called such?
It is because guard cells control movements of CO2 , H2O and O2 just like guard on a gate.they open and close at specific times to regulate movements .
The absorption of water by the guard cells causes the pores to?
close and regulate water loss
What is the guard cells in a plant cell?
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.
What are the holes in leaves surrounded by guard cells?
StomataThe holes in leaves surrounded by guard cells are called stomata. These stomata help regulate the water that goes into and out of the plant.
Guard cells open and close pores in leaves to regulate?
Water loss and gas exchange
What is the function of the guard cells in regulating gas exchange in a leaf?
The stoma opens and closes to allow gas exchange. The Guard cells are located around the stoma and regulate the opening and closing of the stoma.
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.
Does water enters the plant through stomata?
The cells that regulate how much air and water pass through the stomata are called guard cells.
Are chloroplast present in guard cells?
Yes, chloroplasts are present in guard cells. Guard cells are specialized cells found in the epidermis of plant leaves and stems that regulate the opening and closing of stomata. Chloroplasts, which contain the green pigment chlorophyll, are responsible for photosynthesis and are necessary for the energy production needed for the opening and closing of stomata.
What do guard cells close to prevent excess water loss?
The guard cells provide the plant with the control mechanisms. The guard cells control the opening and closing of the stomata in plant tissue. Without guard cells, the plants would not be able to control its water intake.
