To avoid serious symptoms, spend time in sunlight and eat foods that are good sources of vitamin D, including milk, eggs, fish oil, mackerel, sardines, canned salmon, tuna, soy, seaweed, broccoli, molasses, legumes, beans, almonds and oranges.
Leaves, stems, roots, and flowers are all made up of various tissues. Plant Tissues Plant Tissues fall into two large categories: Meristematic, or Permanent (Non-Meristematic) Meristematic Tissues Meristems are places in plants where cell division is occurring. During cell division, one cell becomes two cells.Each new cell can also divide.lant Tissues Plant Tissues fall into two large categories: Meristematic, or Permanent (Non-Meristematic) Meristematic Tissues Meristems are places in plants where cell division is occurring. During cell division, one cell becomes two cells. Each new cell can also divide.
This specialized cellular network is the vascular tissue system; plants with vascular tissues are referred to as vascular plants. The vascular tissue system is composed of two different types of tissues: xylem and phloem. Although both xylem and phloem form a continuous tissue system throughout the plant body, the two tissues have different functions. Xylem is the primary water- and mineral-conducting tissue, and phloem is the primary food-conducting tissue. Unlike the circulatory system in animals, the vascular tissue in plants does not recirculate water.