How are a taproot system and a fibrous root system different?

• A. A taproot system is primarily used for water absorption, while a fibrous root system is used for nutrient storage.
• B. A taproot system is found only in monocots, while a fibrous root system is found only in dicots.
• C. A taproot system grows horizontally, while a fibrous root system grows vertically.
• D. A taproot system has a single, large primary root, while a fibrous root system consists of many small roots of similar size.

Answer: (D)

Verified step by step guidance

1. Begin by understanding the basic structure of a taproot system. A taproot system features a single, large primary root that grows directly downward. This primary root can penetrate deep into the soil, providing stability and accessing deeper water sources.
2. Next, explore the structure of a fibrous root system. Unlike the taproot system, a fibrous root system consists of many small roots that are similar in size. These roots spread out horizontally and are typically found near the surface of the soil.
3. Consider the functional differences between the two systems. The taproot system is advantageous for plants that need to access water deep in the soil and provides strong anchorage. In contrast, the fibrous root system is beneficial for plants that require efficient nutrient absorption from the topsoil and helps prevent soil erosion.
4. Examine the types of plants that typically have each root system. Taproot systems are commonly found in dicots, such as carrots and dandelions, while fibrous root systems are typical in monocots, like grasses and wheat.
5. Finally, reflect on the ecological roles of each root system. Taproot systems can help plants survive in dry conditions by reaching deeper water sources, whereas fibrous root systems can quickly absorb nutrients and water from rainfall, supporting rapid growth in favorable conditions.