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Guard cells

Guard cell

(Science: plant biology) plant cells occurring in pairs in the epidermis, flanking each stoma. Changes in turgor in the guard cells cause the stoma to open and close. A pair of cells found on each side of a stomatal opening, which has properties enabling the contraction and expansion of the stomatal pore.


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Transpiration Please help Me

... is due to transpiration. transpiration is an active process, because cells need to constantly pump ions (actively) into stomata guard cells to keep stomata open. Thus, if you really want to stretch the term, ascent of sap ...

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by MrMistery
Sun May 03, 2009 3:14 am
 
Forum: Botany Discussion
Topic: Transpiration Please help Me
Replies: 4
Views: 646

Re: Transpiration - please help!

Hi, this is the answer of 1st question: Water make the guard cells to be full, the slot between 2 cells open widely.So, the traspiration takes play strongly. ...

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by lehaiyen
Mon Apr 20, 2009 5:24 am
 
Forum: Botany Discussion
Topic: Transpiration - please help!
Replies: 4
Views: 942

help on plant cells urgently please!!!!!!

well my plant physiology is a bit rusty, but I am sure that guard cells and root hair cells develop from epidermal cells (of leaf and root respectively). Can't help ...

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by MrMistery
Fri Jan 02, 2009 3:58 pm
 
Forum: Cell Biology
Topic: help on plant cells urgently please!!!!!!
Replies: 1
Views: 437

help on plant cells urgently please!!!!!!

i need to know when the following cells differentiate and from what cells do they originate -palisade mesophyll cell -guard cell -root hair cell please help me ASAP!! thanks

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by francesca121
Thu Jan 01, 2009 10:28 pm
 
Forum: Cell Biology
Topic: help on plant cells urgently please!!!!!!
Replies: 1
Views: 437

I need help please!!

... stomata is due to difference in osmatic concentration.u know[i assume] guard cells r the only epidermal cells that contain chloroplast.during day time,the following events ...

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by teja
Sun Nov 04, 2007 12:24 pm
 
Forum: Botany Discussion
Topic: I need help please!!
Replies: 1
Views: 970
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