Fibrous Root System is described as primary root being short-lived and replaced with a large number of roots arising from the base of the stem. Example: wheat. This statement corresponds to which option?

Fibrous Root System is described as primary root being short-lived and replaced with a large number of roots arising from the base of the stem. Example: wheat. This statement corresponds to which option?

• A. Primary root and its branches
• B. Primary root short lived and replaced with large number of roots arising from the base of the stem. Example: wheat
• C. Roots arising from the stem
• D. Adventitious roots

Answer: (B)

The statement describes the fibrous root system. In this type, the seedling’s primary root is short-lived and quickly replaced by a large number of roots that arise from the base of the stem. These adventitious roots form a dense, shallow network near the soil surface, which is characteristic of grasses like wheat. This is in contrast to a taproot system, where a persistent primary root remains and gives rise to lateral roots. Adventitious roots are roots that originate from non-root tissues (like the stem), but on their own they don’t define the system; the defining feature here is the replacement of the primary root by many adventitious roots from the stem base, which is exactly what happens in a fibrous root system.

The statement describes the fibrous root system. In this type, the seedling’s primary root is short-lived and quickly replaced by a large number of roots that arise from the base of the stem. These adventitious roots form a dense, shallow network near the soil surface, which is characteristic of grasses like wheat. This is in contrast to a taproot system, where a persistent primary root remains and gives rise to lateral roots. Adventitious roots are roots that originate from non-root tissues (like the stem), but on their own they don’t define the system; the defining feature here is the replacement of the primary root by many adventitious roots from the stem base, which is exactly what happens in a fibrous root system.