Difference between revisions of "Stoma"

Latest revision as of 12:28, 20 December 2019

Key Stage 3

Meaning

Stomata are holes in the leaf that can open and close to allow or stop gas exchange in the leaf.

Singular Noun: Stoma

Plural Noun: Stomata


The under side of a leaf showing guard cells and stomata.

About Stomata

There are usually more stomata on the underside of a leaf than the top side.

Stomata close when the leaf becomes dehydrated. This stops photosynthesis, which needs water, so it helps stop the dehydration from getting worse.

The Process:

1. Plant becomes dehydrated.

2. Guard Cells become flaccid.

3. Stomata close.

4. Carbon Dioxide can no longer enter the leaf.

5. Photosynthesis stops.

6. Respiration continues to make water and water is taken up by the roots.

7. Plant becomes hydrated again.

8. Guard Cells become turgid.

9. Stomata open.

10. Carbon Dioxide can now get into the leaf.

11. Photosynthesis starts again using up the water.

References

@@ Line 23: / Line 23: @@
 : 5. [[Photosynthesis]] stops.
 : 6. [[Respiration]] continues to make [[water]] and [[water]] is taken up by the [[root]]s.
-: 7. [[Plant]] becomes [[hydrated]] again.
+: 7. [[Plant]] becomes hydrated again.
 : 8. [[Guard Cell]]s become [[turgid]].
 : 9. [[Stomata]] open.
 : 10. [[Carbon Dioxide]] can now get into the [[leaf]].
 : 11. [[Photosynthesis]] starts again using up the [[water]].
+===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=27ad53b0283feeff7fc5ae04a9e205f531 ''Stomata, page 55, GCSE Biology; Student Book, Collins, 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=ad276ad49df77ab4b40ab4fd0fe10321 ''Stomata, pages 22, 38, 40, GCSE Combined Science; 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 ''Stomata, pages 23, 66-68, GCSE Biology; Third Edition, Oxford University Press, AQA '']
+:[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Stomata, pages 297, 301, GCSE Chemistry; Student Book, Collins, 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 ''Stomata, pages 60, 86, 88, 89, GCSE Combined Science Trilogy; Biology, CGP, 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=27ad53b0283feeff7fc5ae04a9e205f532 ''Stomata, pages 60-1, 68, 70-1, GCSE Biology; Student Book, Collins, 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 ''Stomata, pages 66, 92, 94, 95, GCSE Biology, CGP, AQA '']
+:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Stomata, pages 68-9, GCSE Combined Science Trilogy 1, Hodder, 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 ''Stomata, pages, 25, 44, GCSE Biology; The Revision Guide, CGP, AQA '']
+====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 ''Stomata (singular stoma), page 125, GCSE Biology, Pearson, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Stomata, page 50, GCSE Combined Science; The Revision Guide, 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 ''Stomata, pages 211-214, GCSE Biology, CGP, Edexcel  '']
+:[https://www.amazon.co.uk/gp/product/1782946748/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946748&linkCode=as2&tag=nrjc-21&linkId=a4f0348fc37d0ba1bb52d27f8679581f ''Stomata, pages 72, 73, GCSE Biology; The Revision Guide, 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 ''Stomata, 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 ''Stomata, pages 35, 39, 40, Gateway GCSE Biology; The Revision Guide, CGP, OCR '']
+:[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Stomata, pages 46, 80-81, Gateway GCSE Biology, Oxford, OCR '']