Fibrous Roots

Fibrous roots are a type of root system that consists of a cluster of thin, thread-like roots. Unlike taproots, which have a single, dominant main root, fibrous roots are composed of numerous small roots of similar size. These roots typically originate from the base of the stem and spread out in all directions. Fibrous root systems are commonly found in grasses, such as wheat, rice, and maize, as well as in many other herbaceous plants.

Characteristics of Fibrous Roots

Fibrous roots possess several distinguishing characteristics:

1. Small Side Roots: In fibrous roots, small side roots grow from a main root. These side roots branch out in various directions and form a dense network within the soil. This extensive root system helps in absorbing water and nutrients effectively.

2. Number of Roots: Unlike taproots, which have a single main root, fibrous roots do not have a dominant central root. Instead, a number of roots grow from the end of the stem. These roots are of similar size and length, and they work collectively to anchor the plant and extract nutrients from the soil.

3. Parallel Roots: Unlike the parallel roots found in plants with taproots (e.g., carrot), fibrous roots do not grow directly from the stem. Instead, they originate from the base of the stem and spread out horizontally in all directions. This parallel arrangement of roots helps to maximize the plant's ability to absorb water and nutrients from a larger area of soil.

4. Branching: While fibrous roots do not typically grow directly from the branches of the plant, they can develop adventitious roots. These are roots that grow from stems or leaves rather than from the main root system. Adventitious roots can provide additional support and nutrients to the plant.

Conclusion

In conclusion, the correct answer to the given question is option 'B' - a number of roots grow from the end of the stem. Fibrous roots are characterized by the presence of numerous small side roots that branch out from the base of the stem and spread in all directions. This network of roots helps in anchoring the plant, absorbing water and nutrients, and supporting the overall growth and development of the plant.