Shockingly, the longest bridge in the world is 102.4 miles! Curious individuals can find this architectural wonder in China, the Danyang-Kunshan Grand Bridge. This $8.5 million bridge carries trains between Nanjing and Shanghai.
The ground tissue comprises the bulk of the primary plant body. Parenchyma, collenchyma, and sclerenchyma cells are common in the ground tissue. Vascular tissue transports food, water, hormones and minerals within the plant. Vascular tissue includes xylem, phloem, parenchyma, and cambium cells. Two views of the structure of the root and root meristem.
The secondary vascular tissues are aligned, forming radial files of cells that are produced from a single cambium initial cell that you can locate between the xylem and phloem. The primary vascular tissues do not form neat radial files; the cells in the primary vascular areas appear to be much more random in pattern.