Flashcards in Roots: Structure, Functuions, Transport System, Food Storage, Types Deck (7)
What is the is the function of the root
Roots absorb water and minerals and transport them to stems. They also anchor and support a plant, and store food. A root system consists of primary and secondary roots.
What is the structure of the root
A cylinder of vascular tissue resembling a bundle of straws to the inside, living phloem to the outside, and a centre of parenchymal pith) forms the core of the root, and a waxy layer of suberin separates it from the ground tissue.
Transport of the root
Water then moves from cell to cell through the root cortex by osmosis down a concentration gradient. This means that each cell has a lower water concentration than the one before it. In the centre of the root the water enters the xylem vessels - vein-like tissues that transport water and minerals up a plant.
The system of the root
In most plants, the root system is a below-ground structure that serves primarily to anchor the plant in the soil and take up water and minerals. Roots may be less familiar than the more visible flowers, stems, and leaves, but they are no less important to the plant.
Food storage of roots
Storage roots, such as carrots, beets, and sweet potatoes, are examples of roots that are specially modified for storage of starch and water. They usually grow underground as protection from plant-eating animals.
What is the types of roots
There are two main types of root systems. Dicots have a tap root system, while monocots have a fibrous root system, which is also known as an adventitious root system. A tap root system has a main root that grows down vertically, from which many smaller lateral roots arise.