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Stoma

1,235 bytes added, 10:21, 18 September 2018
Created page with "==Key Stage 3== ===Meaning=== '''Stomata''' are holes in the leaf that can open and close to allow or stop gas exchange in the leaf. : Sing..."
==Key Stage 3==
===Meaning===
'''Stomata''' are holes in the [[leaf]] that can open and close to allow or stop [[Gas Exchange in Plants|gas exchange]] in the [[leaf]].

: Singular [[Noun]]: '''Stoma'''
: Plural [[Noun]]: '''Stomata'''

{| class="wikitable"
|-
|[[File:Stomata.png|center|400px]]
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| style="height:20px; width:400px; text-align:center;" |The under side of a [[leaf]] showing [[Guard Cell|guard cells]] and [[Stoma|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 Cell]]s 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 [[root]]s.
: 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]].