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Answer» Difference Between Parenchyma and Collenchyma Cells : Parenchyma Cells | Collenchyma Cells | | What it means | | Originate from ground and protoderm meristems | Originate from pro-cambium. Epidermal layer of plants are composed of collenchyma cells | | Location | | Found in every delicate plant part | Specifically found in leaves, stems and petioles | | Cell type | | Living and unspecialized cells | Living and specialized cells | | Shape of the cell | | Isodiametric generally, may vary in shape | Elongated cells | | Cell wall | - Present and thin-walled
- Made of cellulose
| - Present, uneven cell wall
- Made of pectin and hemicellulose
| | Intercellular spaces | | Present between cells | Less space present | | Function | - Food storage
- Gaseous exchange
- Photosynthesis
| - Renders mechanical support
- Elasticity
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