Pernicious Anemia. Macrocytic anemia, glossitis, peripheral neuropathy, weakness, hyperreflexia, ataxia, and other neurological manifestations characterize classical vitamin B12 (cobalamin) deficiency. It is common, however, to encounter patients with vitamin B12 deficiency who have atypical clinical or laboratory features.
Nutrient, Liquid and Energy Distribution. Most of the advantages of vascular tissues stem from this functional one: A tracheophyte's xylem and phloem--which comprise the vascular system and are housed in the stem--enable liquids, nutrients and energy to be transported and distributed throughout the whole of the plant.
1 Vascular tissues transport water and dissolved substances inside the plant and helps support the stem. 2  The 2 types of vascular tissue are xylem & phloem. 3  Xylem carries water and dissolved ions from the roots to stems and leaves.  Phloem carries dissolved sugars from the leaves to all other parts of the plant.