Textbook Solutions MCQ Online Tests. Important Solutions 9. Question Bank Solutions Time Tables. School Change. AL Class 6 to 10 Ask Doubt. Study Abroad Change. Management and Business Administration Change. Learn Change. Medicine and Allied Sciences Change. Law Change. Animation and Design Change. Although the image above is not in colour, you can observe the single thick root with minimal outgrowth. A tap root system can penetrate a long way underground. They are thus effective in searching for valuable nutrients.
This singular property also helps dicots withstand long periods of drought or low rainfall. Did you know? A mesquite plant Prosopis velutina or velvet mesquite is a good example can have tap roots extending more than feet below ground! Research on the Internet on how these plants play an important part in desert ecology! Here is an image for you below of a velvet mesquite tree in Texas, USA.
What is a Fibrous Root? A fibrous or adventitious root system is seen in monocots. The root does not have any single and central structure. Instead, this root system looks like a mesh of evenly-sized, thick, hair-like structures. Such roots do not penetrate too deep underground. Such a root structure can grow underground- into the soil- and even aboveground.
One rule-of-thumb difference between a tap root and fibrous root is that the former can never form over-ground. Notably, these roots prevent soil erosion. Since they are extensively large, they are capable of accumulating resources and nutrients even in arid land.
Many flowering plants have fibrous roots. These include lilies, tulips and daffodils. Trivia : Lilies come in many shades. The orange lily is commonly held to be the most rarely bred because they consume a lot of water. The newly produced cells are used for the growth of the root, particularly above the meristematic areas, and some are added to the root cap. Above the growth zone is the area of maturation, where most of the cell tissues mature and completes the process of cell differentiation, which starts at the upper part of the meristematic region.
The root is made up of three parts and the outermost being the epidermis, followed by the cortex, and the innermost being the vascular cylinder. Taproots are the main root systems that grow vertically to the ground. Most of the dicotyledons such as dandelions have taproots, and others like beets and carrots have taproots which are specialized for food storage. Taproots develop from the embryonic root known as radicle.
They are deeply rooted below the surface and typically have a single main root, also known as the primary root, and they have secondary roots growing laterally from the main root.
Taproot systems anchor the plants in the soil and help in absorbing water from deep below the surface, giving the plant a better chance to survive during drought. Adventitious roots originate from another organ apart from the root, and it could be a stem or leaf. These roots are also found in underground stems as they appear in corn, rhizome, and tubers. Such plants could be vegetatively propagated through leaf or stem cutting.
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