Question

Functions of phloem in points vice

Answer 1

phloem is a vascular tissue.

its functions are:

• The main function of the phloem is to transport nutrients from the source where they are produced (e.g. the leaves through photosynthesis) to the sink (e.g. flowers and fruits) where they are used.
• this is done with the help of translocation.
• When there is a high concentration of substance (eg sugar) within the cells, an osmotic gradient is created. and a high  pressure is created within the phloem. The high  pressure causes the water and sugars to move through the tubes of the phloem, in to the ‘sink tissues’ (e.g. the roots, growing tips of stems and leaves, flowers and fruits).
• When the sink receives the sugar solution, the sugars are used for growth and other processes.
• phloem transports in both directions.