Cotinine is a byproduct of nicotine, which is found in tobacco. How  long cotinine can stay in your urine depends upon the amount of  tobacco you have smoked and how many yeâ¦ars you have been smoking  for. Therefore, cotinine could stay in your urine for as little as  2 days or as much as 3 months. Answered.
In vascular plants, phloem is the living tissue that carries organic nutrients (known as photosynthate), in particular, sucrose, a sugar, to all parts of the plant where needed.In trees, the phloem is the innermost layer of the bark, hence the name, derived from the Greek word ÏÎ»Î¿Î¹ÏÏ (phloios) meaning bark.n vascular plants, phloem is the living tissue that carries organic nutrients (known as photosynthate), in particular, sucrose, a sugar, to all parts of the plant where needed.
Phloem on the other hand is composed of living cells and is reserved for the flow of photosynthate (i.e. the sugars produced via photosynthesis). The photosynthate is also carried as a water based solution, however it moves via positive hydrostatic pressure (as opposed to that of the xylem which is negative).hat said, the xylem will continue will grow as new dead cell layers accumulate over the years, while the phloem will not appear that much larger being that is composed of living tissue only. .