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.
Xylem and phloem are the two types of vascular tissues that are present in plants. They are responsible for transporting water, minerals, food and other organic materials between the roots, stems and leaves of the plant.ylem cells are hard walled cells, which are stacked on top of each other and are mainly found in the center of the stem. Hence, xylem has another function, which is to provide mechanical support to the plant. Xylem is surrounded by the phloem. Phloem is the other type of transport tissue in vascular plants.