Hold Starch granuals which produces energy for the cells.
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Thylakoid
A membrane stack which contains Chloraphyl.
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Granum
A stack of Thylakoids.
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Middle Lamella
The first layer of a cell wall in a plant cell and is made up of Calcium Pectate.
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Primary Wall
Second layer of the cell wall and is made up of cellulose.
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Secondary wall
A further layer of the cell wall made of cellulose and may contain lignin. Lignin penetrates all wall layers and then hardens them, therefore it provides support for the cell wall.
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Plasmodesmata
Special Cytoplasm bridges that form between cells.
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Plasmodesmata
They can form when cells divide, the cells dont seperate completely, and the threads pass through gaps in the newly formed cell walls and signalling substances can pass from one to another through cytoplasm of the cells and is known as the Symplast.
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Pits
They are in the cell wall and do not have Primary and Secondary layers themsleves.
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