Movement of water is in one direction. Phloem is living plant tissue which transports nutrients in the plant. For instance, sugars are transported from the leaves to the rest of the plant including the growing regions and the storage organs. Another important feature of the root are the root hair cells which are modified to have a large surface area for absorption of water and mineral salts. Leaves are arranged on the plant so as to absorb the maximum amount of light as possible ie.
Leaves have stomata which are tiny pores and which allow gaseous exchange to take place.
These are more numerous on the lower surface of the leaf. The internal structure of the leaf is further specialised to allow photosynthesis to take place efficiently. The flower is the reproductive organ of the plant. It is designed to attract insects so that pollination can occur. This allows the plant to reproduce.