Evolutionary history of plants phloem on the outside. Since xylem cells comprise dead, lignified tissue, subsequent rings of xylem are added to those already present, forming wood. The first plants to develop secondary growth and a woody habit, were apparently the ferns, and as early as the Middle Devonian one species, "Wattieza", had already reached heights of 8 m and a tree-like habit. Other clades did not take long to develop a tree-like stature. The Late Devonian "Archaeopteris", a precursor to gymnosperms which evolved from the trimerophytes, reached 30 m in height. The progymnosperms were the first plants to develop true wood, grown from
Naked Attraction Naked Attraction Naked Attraction is a British dating game show in which a clothed person selects two contestants from six naked people, whose bodies and then faces are revealed in stages from the feet up. The person deciding then appears nude to select one of them for a fully clothed date. The programme then presents their feedback after the date. It premiered on Channel 4 on 25 July 2016 and is presented by Anna Richardson. In November 2016, "Naked Attraction" was renewed for a second series, which began airing on 29 June 2017. In February 2018, the show was renewed