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.
1 Parenchyma tissues are made of simple, thin-walled cells. 2  In a carrot, for example, the parenchyma cells become a storage unit called the cortex. 3  In leaves, a layer of parenchyma tissues under the epidermis is active in photosynthesis. Phloem tissue conducts food and metabolites from photosynthesis throughout the plant, including down to the roots. 2  Structures (organs) â Groups of tissues working together with a common function, (e.g., roots, stems, leaves, flowers, fruits, and seeds) .