In vascular plants, the roots are the organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allows plants to grow taller and faster. They most often lie below the surface of the soil, but roots can also be aerial or aerating, that is, growing up above the ground or especially above water. The evolutionary development of roots likely happened from the modification of shallow rhizomes (modified horizontal stems) which anchored primitive vascular plants combined with the development of filamentous outgrowths which anchored the plants and conducted water to the plant from the soil. Root, in botany, that part of a vascular plant normally underground. Its primary functions are anchorage of the plant, absorption of water and dissolved minerals and conduction of these to the stem, and storage of reserve foods. The root differs from the stem mainly by lacking leaf scars and buds, having a root cap, and having branches that originate from internal tissue rather than from buds.
Types Of Roots And Root Systems
Some plants have small, thin roots, all of the same length.
• These roots form a tuft, as for instance the roots of onion, rice, millet, maize.
• A plant that has many small roots of the same length, the same thickness, the same shape, has fibrous roots
Some plants have roots that are shallow and long.
• Creeping roots do not go deep into the soil.
• These roots go a long way from the base of the plant.
They cover a large area.
They have to find in a small depth of earth the food necessary for the life of the plant.
Many trees have creeping roots.
• A plant that has shallow, very long roots has creeping roots.
Some plants have only one root, very thick, deep, straight, called a taproot.
• Smaller roots grow on this thick root; they are called rootless.
• Tap-roots go deep into the soil.
They cannot penetrate soil that is too hard.
• Cotton, coffee, cocoa, okra, carrots, papayas all have a root that goes deep into the soil, is very thick and straight.
They have a tap- root.
Some plants have very thick roots.
• These roots store up food.
• These roots are thick because they have taken up a lot of food from the soil.
The food is stored up in order to feed the whole plant.
The plant is said to have built up reserves.
In some plants, roots start from the stem above the soil, that is, above the collar, and afterward go down into the earth.
• Adventitious roots grow above the collar.
• Soil put around the collar helps adventitious roots to grow; the plant is earthed up.
• A plant with roots on the stems has adventitious roots.
Enable plants roots
Onions are popular root vegetables, serving as a staple ingredient in many cuisines. Research shows that eating onions may be associated with a wide array of health benefits. They’re high in fiber, vitamin C, and antioxidants.
Sweet potatoes are vibrant and delicious root vegetables that are highly nutritious and jam-packed with health benefits. Sweet potatoes can be baked, boiled, roasted, or sautéed and enjoyed as a delicious side dish or added to everything from sandwiches to salads to breakfast bowls.
Turnips are a delicious root vegetable and have been cultivated for centuries. Additionally, studies show that consuming more cruciferous vegetables, such as turnips, may be associated with a lower risk of stomach, breast, colorectal, and lung cancer. They have an impressive nutrient profile, being a great source of vitamin C, fiber, manganese, and potassium.
Ginger makes a great addition to tea, soups, smoothies, and stews and can bring a zesty zing to just about any dish. Ginger is a flowering plant from China that is closely related to other root vegetables like turmeric.
Beets are one of the most nutritious root vegetables available, packing a good amount of fiber, folate, and manganese into each serving. Studies also show that eating beets
may improve exercise performance and increase blood flow to your brain.
Garlic is a root vegetable that belongs to the Allium genus and is closely related to onions, leeks, chives, and shallots. Studies have found that garlic can promote heart health by lowering blood pressure and levels of total cholesterol and triglycerides. Best of all, garlic is highly versatile and can be used to amplify the flavor of your favorite savory soups, sauces, side dishes, and main courses.
As one of the most well-known root vegetables, carrots also top the charts as one of the most nutritious
. What’s more, eating carotenoids may protect against age-related macular degeneration (AMD), the leading cause of vision loss. Carrots make a great snack when eaten raw or dipped in hummus, but they can also be cooked and used in stir-fries, stews, or side dishes.
Trusted SourcCarrots make a great snack when eaten raw or dipped in hummus, but they can also be cooked and used in stir-fries, stews or side dishes.
Celeriac is a highly versatile and delicious root vegetable that’s easy to cook and enjoy. Celeriac has a nutty taste and crunchy texture that works especially well in salads. It can also be boiled, roasted, baked or mashed and used in place of potatoes in nearly any recipe.
Turmeric is a type of root vegetable that belongs to the same plant family as ginger and cardamom. Turmeric is widely available as a spice and can be added to both savory and sweet recipes, as well as drinks, such as golden turmeric milk
.
Potatoes are incredibly versatile and widely available, with up to 2,000 different varieties currently cultivated in 160 countries around the world. Steer clear of fried potatoes or processed potato products, which are often high in fat, salt and calories yet lacking in nutrition. Instead, select baked, boiled or steamed potatoes to get the most nutrients.
Rutabagas are root vegetables that belong to the mustard family and are commonly cultivated for their edible leaves and roots. Rutabaga can be mashed, baked, or roasted and enjoyed in soups, salads, noodles, and even desserts.
In vascular plants, the roots are the organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allow
plants to grow taller and faster.
Roots absorb water and nutrients from the soil.
They anchor the plant firmly.
They help in storing food and nutrients.
Roots transport water and minerals to the plant.
Parts of roots
The primary root is an organ that forms at the root pole of the plant embryo. ... These first-order branch roots are often called lateral roots. They develop from cells of the pericycle tissue of the taproot, the earliest recognizable stage of their growth being a lateral root primordium.
Secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken, while primary growth is growth that occurs as a result of cell division at the tips of stems and roots, causing them to elongate, and gives rise to primary tissue.
The tertiary root system is made up of two or more classes of genetically and functionally distinct root, smaller than 0.6 mm in diameter that condition the observed functionality of mature root systems.
A root hair, or absorbent hair, the rhizoid of a vascular plant, is a tubular outgrowth of a trichoblast, a hair-forming cell on the epidermis of a plant root. As they are lateral extensions of a single cell and only rarely branched, they are visible to the naked eye and light microscope. They are found only in the region of the maturation of the root. Root hair cells are adapted for this by having a large surface area to speed up osmosis. Another adaptation that they have is root hair cells have a large permanent vacuole.
The third region involved in primary root growth is the maturation region. As the name implies, this is the area of cell maturation. It is also where the cells that grew in the elongation region fully develop and become adult cells.
The zone of elongation is where the newly-formed cells increase in length, thereby lengthening the root. Beginning at the first root hair is the zone of cell maturation where the root cells differentiate into specialized cell types.
The zone of cell division is closest to the root tip and is made up of the actively-dividing cells of the root meristem, which contains the undifferentiated cells of the germinating plant. ... Beginning at the first root hair is the zone of cell maturation where the root cells differentiate into specialized cell types.
It protects the tender apex of the root as it makes its way through the soil. The cells of the root cap secret mucilage which lubricates the passage of the root through soil. Mucilage also helps in the absorption of water and uptake of nutrient ions.
Uses of roots in human life
Roots play an important role in nutrient intake, similar to the way leaves photosynthesize — a process of converting light energy into food. The roots help to bring soil nutrients up through the vascular system of the plant or tree and even work to store nutrients during dormant periods.
Once the embryo germinates from its seed or parent plant, it begins to produce additional organs (leaves, stems, and roots) through the process of organogenesis. New roots grow from root meristems located at the tip of the root, and new stems and leaves grow from shoot meristems located at the tip of the shoot.
Does cutting roots kill a plant? While pruning the roots of a plant or tree may sound scary, it's actually quite common. If done properly, root pruning can improve the plant's growth and overall health. Container plants can become "pot-bound," with tight circular roots that can't get enough nutrition and will eventually kill the plant.
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