Consider the following statements about epidermal tissue: (1) Epidermal cell has a small amount of cytoplasm and a large vacuole. (2) Waxy cuticle layer is absent in roots. (3) Root hairs are unicellular, while stem hairs (trichomes) are multicellular. (4) Trichomes may be branched or unbranched, soft or stiff and prevent transpiration. (5) Guard cells are dumbbell-shaped in dicots and bean-shaped in monocots. Which one statement is incorrect?