Phloem:

phloem, plant vascular tissue that conducts foods made in the leaves during photosynthesis to all other parts of the plant. Phloem is composed of various specialized cells called sieve elements, phloem fibres, and phloem parenchyma cells. Phloem is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis to the rest of the plant. It consists of conducting cells, parenchyma cells, companion cells, and supportive cells, and has a multidirectional flow driven by positive pressures. The term Phloem was introduced by C. Nageli (1858). The word " phloem " is extracted from the Greek, meaning " bark ". Phloem is the other complex tissue system in the plants. It is the food conducting tissues of the vascular plant. The materials (food), i.e. (towards the root and stem) can move in both directions because phloem transports food and water from leaves to all plant parts. All phloem cells are living except phloem fibres. The phloem is heterogeneous (complex tissues). It is a ... Phloem is a complex permanent tissue that transports food materials in plants. Learn about its components, types and differences in angiosperms and gymnosperms, and practice problems and FAQs.