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Flying spider-monkey tree fern, scientifically known as Alsophila spinulosa is a species of tree fern widely distributed in Asia. Alsophila spinulosa . Image credit: Quanzi Li. Land plants evolved 470 million years ago from aquatic algae and have since changed terrestrial ecosystems. The body of land plants has undergone a series of developmental, biochemical and physiological adaptations, one of which is the emergence of vascular tissue. In seed plants, xylem, with thickened cell walls, provides stems with high water-conducting efficiency and strong structural support. Lignin is an important component of the secondary cell wall of xylem – it not only provides mechanical support in fiber cells but also forms a hydrophobic surface in vessels to aid water transport. Outside of seed plants, tree ferns—members of the order Cyatheales—are one of the few lineages that have tree-like trunks. This plant has high ornamental value and is considered a resource for natural products with pharmaceu

Channel Nine has released a dramatic new trailer for the 2022 season of The Block. The eighteenth season, titled The Block: Tree Change, sees five city-loving couples arriving in a limousine to Gisborne South in Victoria’s Macedon Ranges. Drama quickly ensued as furious host Scott Cam questioned why either team would ‘do runners after two days’. Channel Nine has released a new trailer for the 2022 season of The Block: Tree Change. In one dramatic moment, host Scott Cam rips off one of the teams for ‘doing the runner’ The start of the trailer sees longtime host Scott, 59, arrive in a blue plaid shirt and announce to the camera: ‘Australia, welcome to Block country!’ A limousine then drops off five couples, as Scott reveals the new season will see not only five stunning properties come to life but also tennis courts and a winery. Neale Whitaker cuts a dapper figure in a tailored suit as he plays tennis, while fellow returning judge Shaynna Blaze makes a superb arrival on horseback.