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| Q. |
The special modified epiderniai cells surrounding stomatal pore are called - |
| A. | Epithelial cells |
| B. | Guard cells |
| C. | Subsidiary cells |
| D. | Accessory cells |
| Answer» B. Guard cells | |
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Explanation: The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the opening. Guard cells are specialized cells in the epidermis of leaves, stems and other organs that are used to control gas exchange. |
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