Guard Cell - Revision history

NRJC at 13:08, 11 July 2023

2023-07-11T13:08:18Z

NRJC: /* About Guard Cells */

2023-07-11T13:04:26Z

‎About Guard Cells

Ellen References at 15:34, 11 December 2019

2019-12-11T15:34:15Z

Ellen References at 16:20, 20 November 2019

2019-11-20T16:20:37Z

Ellen References at 08:04, 6 November 2019

2019-11-06T08:04:02Z

NRJC at 10:54, 6 June 2019

2019-06-06T10:54:21Z

NRJC at 10:52, 6 June 2019

2019-06-06T10:52:57Z

NRJC: /* About Guard Cells */

2018-11-09T16:41:54Z

‎About Guard Cells

NRJC at 16:41, 9 November 2018

2018-11-09T16:41:31Z

NRJC at 07:08, 17 September 2018

2018-09-17T07:08:44Z

@@ Line 27: / Line 27: @@
 |-
 | style="height:20px; width:300px; text-align:center;" |[[Turgid]] '''guard cells''' are full of [[water]] and have a hole called a [[stoma]] between them to allow air in and out.
-| style="height:20px; width:250px; text-align:center;" |[[Flacid]] '''guard cells''' are [[dehydrated]] and the [[stoma]] is blocked stopping air form getting in or out of the [[leaf]].
+| style="height:20px; width:250px; text-align:center;" |[[Flaccid]] '''guard cells''' are [[dehydrated]] and the [[stoma]] is blocked stopping air form getting in or out of the [[leaf]].
 |}

@@ Line 27: / Line 27: @@
 |-
 | style="height:20px; width:300px; text-align:center;" |[[Turgid]] '''guard cells''' are full of [[water]] and have a hole called a [[stoma]] between them to allow air in and out.
-| style="height:20px; width:250px; text-align:center;" |[[Flaccid]] '''guard cells''' are [[dehydrated]] and the [[stoma]] is blocked stopping air form getting in or out of the [[leaf]].
+| style="height:20px; width:250px; text-align:center;" |[[Flacid]] '''guard cells''' are [[dehydrated]] and the [[stoma]] is blocked stopping air form getting in or out of the [[leaf]].
 |}

← Older revision		Revision as of 15:34, 11 December 2019
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	:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Guard cells, page 125, GCSE Biology, Pearson, Edexcel '']		:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Guard cells, page 125, GCSE Biology, Pearson, Edexcel '']
	:[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Guard cells, pages 211, 212, GCSE Biology, CGP, Edexcel '']		:[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Guard cells, pages 211, 212, GCSE Biology, CGP, Edexcel '']
		+
		+	====OCR====
		+	:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Guard cells, page 33, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
		+	:[https://www.amazon.co.uk/gp/product/1782945660/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945660&linkCode=as2&tag=nrjc-21&linkId=83aa4500ad7759e7f401a1c5ba5df758 ''Guard cells, page 40, Gateway GCSE Biology; The Revision Guide, CGP, OCR '']

← Older revision		Revision as of 16:20, 20 November 2019
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	:[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Guard cells, pages 60, 88, GCSE Combined Science Trilogy; Biology, CGP, AQA '']		:[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Guard cells, pages 60, 88, GCSE Combined Science Trilogy; Biology, CGP, AQA '']
	:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Guard cells, pages 66, 94, GCSE Biology, CGP, AQA '']		:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Guard cells, pages 66, 94, GCSE Biology, CGP, AQA '']
		+
		+	====Edexcel====
		+
		+	:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Guard cells page 87, GCSE Combined Science, Pearson Edexcel '']
		+	:[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Guard cells, page 125, GCSE Biology, Pearson, Edexcel '']
		+	:[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Guard cells, pages 211, 212, GCSE Biology, CGP, Edexcel '']

← Older revision		Revision as of 08:04, 6 November 2019
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	\| style="height:20px; width:250px; text-align:center;" \|[[Flaccid]] '''guard cells''' are [[dehydrated]] and the [[stoma]] is blocked stopping air form getting in or out of the [[leaf]].		\| style="height:20px; width:250px; text-align:center;" \|[[Flaccid]] '''guard cells''' are [[dehydrated]] and the [[stoma]] is blocked stopping air form getting in or out of the [[leaf]].
	\|}		\|}
		+
		+	===References===
		+	====AQA====
		+
		+	:[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f364 ''Guard cell, pages 60-1, 68, 70-71, GCSE Biology; Student Book, Collins, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Guard cells, page 44, GCSE Biology; The Revision Guide, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Guard cells, page 66, GCSE Biology; Third Edition, Oxford University Press, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09974 ''Guard cells, pages 38, 40, GCSE Combined Science; The Revision Guide, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Guard cells, pages 60, 88, GCSE Combined Science Trilogy; Biology, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Guard cells, pages 66, 94, GCSE Biology, CGP, AQA '']

@@ Line 1: / Line 1: @@
 ==Key Stage 3==
 ===Meaning===
-[[File:LeafCrossSection.png|right|300px|thumb|The '''two guard cells''' can be seen at the [[leaf]].]]
+[[File:LeafCrossSection.png|right|300px|thumb|The '''two guard cells''' can be seen at the top of this [[leaf]].]]
 A '''guard cell''' is a [[Specialised Cell|specialised cell]] in a [[plant]] [[leaf]] which can change shape to allow or stop [[gas]]es from getting into the [[leaf]].
@@ Line 31: / Line 31: @@
 ==Key Stage 4==
 ===Meaning===
 A '''guard cell''' is a [[Specialised Cell|specialised cell]] in a [[plant]] [[leaf]] which can change shape to open or close a hold in the [[leaf]] called a [[stoma]] allowing or preventing [[gas]] exchange.

@@ Line 15: / Line 15: @@
 ===About Guard Cells===
 : '''Guard cells''' are shaped with a gap between them called a [[stoma]].
-: There are more '''guard cells''' found on the bottom of the [[leaf]].
+: There are more '''guard cells''' found on the bottom of the [[leaf]] than the top.
 : [[Photosynthesis]] needs water, so '''guard cells''' are there to make sure the [[leaf|leaves]] don't use up too much [[water]] and die of [[Dehydrate|dehydration]].
 : '''Guard cells''' fill with water to become [[turgid]], making the [[stoma|stomata]] larger. This allows [[Carbon Dioxide|carbon dioxide]] into the [[leaf]] for [[photosynthesis]].
@@ Line 33: / Line 33: @@
 ===Meaning===
 A '''guard cell''' is a [[Specialised Cell|specialised cell]] in a [[plant]] [[leaf]] which can change shape to open or close a hold in the [[leaf]] called a [[stoma]] allowing or preventing [[gas]] exchange.
 ===About Guard Cells===
 : '''Guard Cells''' are essential to control the rate of [[photosynthesis]] and [[transpiration]].
 : When '''guard cells''' become '''flaccid''', due to [[dehydration]], the [[stomata]] close and [[Water Vapour|water vapour]] can no longer escape the [[leaf]]. This stops [[transpiration]], preventing further [[water]] loss. The closed [[stomata]] also prevent [[Carbon Dioxide]] from entering the [[leaf]], stopping [[photosynthesis]] and conserving [[water]] (which is needed for [[photosynthesis]].