Stomatal guard cells are

The 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.