What is meant by modification of roots?

Roots:

1. The section of a plant's body emerges from the radicle and grows downward into the earth.
2. The critical tasks of the root system are the absorption of water and nutrients from the soil.
3. Roots provide anchorage to plant parts.
4. Stores reserve food materials.

Modification of roots:

1. Some plants' roots change shape and structure as they adjust for support, food storage, and respiration.
2. Physiological and mechanical tasks are performed by root modification.
3. Storage roots: Example - tubiform roots
4. Roots for mechanical support: Example - Prop roots
5. Roots for respiration: Example - Pneumatophores