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==Key Stage 3==
===Meaning===
[[File:LeafCrossSectionDiagram.png|right|300px400px|thumb|A [[diagram]] of the cross section of a [[leaf]] showing the [[Palisade Cell]]s, [[Spongy Mesophyll Cell]]s and [[Guard Cell]]s.]]
[[Spongy Mesophyll Tissue]] is a layer of [[Spongy Mesophyll Cell]]s in the [[leaf]].
===About Spongy Mesophyll Tissue===
: [[Spongy Mesophyll Tissue]] allows [[gas]] to pass through the [[leaf]] to the [[Palisade Cell|palisade cells]].