Check the Weather in Israel in January before you book your next holiday. This gives the best indication of the weather in January and includes figures for temperature, sunshine and rainfall. The Israel january weather guide shown below is for Jerusalem. 1  13Â°C max day temperature.
Xylem cells are elongated cells with lignified secondary thickening of the cell walls. Xylem cells are specialised for conduction of water, and first appeared in plants during their transition to land in the Silurian period more than 425 million years ago (see Cooksonia). The possession of xylem defines the vascular plants or Tracheophytes.
Xylem is a chief, conducting tissue of vascular plants. It is responsible for conduction of water and mineral ions/salt. Xylem is a very important plant tissue as it is part of the 'plumbing system' of a plant. Think of bundles of pipes running along the main axis of stems and roots.