Question
Download Solution PDFStomatal guard cells are
- a type of vascular tissue
- a type of ground tissue
- a type of epidermal tissue
- dead cells
Answer (Detailed Solution Below)
Option 3 : a type of epidermal tissue
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Detailed Solution
Download Solution PDFThe correct answer is a type of epidermal tissue.
Key Points
- Stomatal guard cells are a type of epidermal tissue.
- The epidermal tissue system forms the outermost covering of the whole body plant.
- In the epidermal tissue system, the epidermis is the outermost layer of the main plant body.
- This layer is interrupted by stomata.
- The stomata are openings in the epidermis of most of the aerial parts of the plants, especially in the leaves.
- Each stomata is composed of two bean-shaped cells called guard cells, which enclose the stomatal pore.
- The stomatal guard cells are generally much smaller in size as compared to other epidermal cells.
- Stomatal guard cells help to regulate the rate of transpiration during photosynthesis by opening and closing the stomata.
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