In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, and colourless cells. These specialised cells are known as:

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In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These are called bulliform cells. Bundle sheath cells are specialised cells that surround the vascular bundles. Subsidiary cells are modified epidermal cells that surround the guard cells of stomata. Passage cells are unthickened cells found in the endodermis of roots. Answer: Bulliform cells