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.
Blood vessels are composed of two interacting cell types. Endothelial cells form the inner lining of the vessel wall, and perivascular cellsâreferred to as pericytes, vascular smooth muscle cells or mural cellsâenvelop the surface of the vascular tube.