The plants that have fine roots :
Kangkong
etc.....
Fern plants have many fine fibrous roots.
with taproots, the primary and secondary roots grow long. they can reach a deep water source. with fibrous roots, the fine, numerous roots allow fast absorption of water near the soil surface.
Roots don't have roots, plants have roots.
what would happen to plants nutrition if plants did not have roots
Water used in photosynthesis by plants is made available by roots. That is why roots of plants are important to photosynthesis in terrestrial plants. Aqatic plants absorb water from their free surface, hence role of roots in these plants is limited.
Not all plants have roots (eg phytoplankton) and while some plants do grow form their roots (eg grasses), most plants do not grow from their roots but from their apical growing tip.
Roots are an incredibly important element to a great many plants. These plants depend on the roots to suck up water.
Plants roots
The roots.
There are many things a plants roots do for an ecosystem. Plants roots help prevent erosion of soil for example.
Plants absorb water and nutrients through their roots.
They are great they give the roots room to grow, they break down plant matter into fine particles that can be absorbed by the plants and help to lower the ph of acidic soil.