PARTS OF THE PLANTS

ROOTS ARE THE UNDERGROUND PART OF PLANTS.They have three main functions .Firs t,they anchor the plant in the soil.Second , they absorb water and minerals from the space between soil particles ;the roots' absorptive properties are increased by root hair ,which grows behind the root tips , allowing maximum uptake of vital substances .Third , the root is the part of the plant's transport system :xylem carries water and minerals from the root to the stem and leaves,and phloem carries nutrients from the leaves to all parts of the root system.In addition , some roots (e.g carrots)are food stores.Roots have an outer epidermis covering a cortex of parenchyma(packing tissue ) and a central cylinder of vascular tissue .This arrangement helps the roots resist the force of compression as they grow through the soil.

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