The given figure shows the parts of flowering plant.
Which parts of the given figure were involved in the following functions:
(i) Storing reserve food material
(ii) Synthesis of plant growth regulators.
(iii) Absorption of water and minerals from the soil.
(iv) Providing a proper anchorage to the plant parts
 

All the functions are carried out by the root system of the parts (marked as 5 and 6) of flowering plants. The flowering plant consists of an axis, root system and shoots system. The flowering plants consist of a long cylindrical axis which is differentiated into an underground root system. Root is the descending, non-green, underground part lacking nodes, internodes, leaves and buds. Root system consists of primary roots (5) and secondary roots (6). The main functions of the root system are absorption of water and minerals from the soil, providing a proper anchorage to the plant parts, storing reserve food material and synthesis of plant growth regulators. Shoot system is an aerial system, usually above the soil and originates from the plumule. It consists of flower (1), fruits (2), stem (3), leaves (4) and branches.