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.
The protective/supportive sclerenchyma include fibers and sclereids. The vascular sclerenchyma is xylem. Vascular tissues of plants contain xylem and phloem. Xylem cells usually stand out as sclerenchyma cell types whereas phloem cells blend in with other parenchyma.The next two units present more information about xylem and phloem.clerenchyma cells in this view are fibers or xylem. Note the thick secondary cell walls and large lumens of the xylem cells to the right. Contrast these to the smaller diameter fiber cells with thick walls to the upper left. You should note most sclerenchyma cells are dead at maturity and therefore lack nuclei.