Transportation in plants

Why transportation???• Transportation is very important in plants .As leaves

systhesis their food by photosynthesis and roots absorb water and minerals the food need to be transported to every part of the cell for proper functioning of the plant

• Plants transport system will move energy stores from leaves and raw materials from roots these two pathways are constructed as independently organised conducting tubes one xylem which transports water and minerals and phloem which transports food made by the process photosynthesis plants have low energy needs because large proportion of plant cells are dead cells so the relatively have slow transport system

Transport of water

xylem tissue, vessel, trachieds of the roots, stems and leaves are interconnected to from a continuous system of water conducting channel reaching all parts of the plant

At the roots cells in the contact of soil take up ions actively this creates difference in concentration of these ions between root and the soil water therfor moves in to root to eliminate this difference

how is water transported

against gravity???????

Ascent of sap

• In the case of land lying plants such as creepers root pressure is suffiecient for water transport

• In the case of large and tall trees transpiration pull creates tension in the xylem vessels and helps in upward movement of water

Transport of food

• The food produced by the leaf through photosynthesis need to be transported to all the parts of the plant by phloem transport of soluble products of photosynthesis is called as translocation .the phloem transports amino acids and other substances these substances are especially transported to storage organs of root fruits seeds and to growing organs

Transportation system of phloem

• Unlike xylem the translocation in phloem is achieved by utilizing energy.

• Material like surcrose is transferred into phloem tissue usingthe energy from atp this increases osmotic pressure of the tissue causing water to move to it this pressure allows the material according to plant needs

Thank u

• Done by

• Sritej, yashwant ,prabhath sai charan ,tejitha, likitha