What is adventitious roots?

Yes adventitious roots are fibrous roots.

When roots develop from organs of the shoot system instead of the root system. Its main function is to help anchor plants, if above the soil line and if so it is called prop roots.

This is a list of common wetland plants in the northeast US with adventitious roots. Common NameScientific nameStratumOne-row watercressNasturtium microphyllumHerbSeedboxLudwigia...

Adventitious roots are very common in the genus Ficus.

Lateral roots is Endogenous. Adventitious roots have lateral roots.