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.
Several types of cells make up xylem tissue, including parenchyma as well as the tracheids and vessel members, two cell types that specialize in transferring water and minerals. Tracheids and vessel members are referred to as tracheary elements. Phloem vascular tissue contains parenchyma and has two types of cells that assist in the transport of food: sieve-tube members and sieve cells. Sieve-tube members are more specialized and are present in advanced flowering seed plants.