The essential functions of roots are anchorage and absorption of water and minerals in terrestrial plants. What functions are associated with the roots of aquatic plants? How are the roots of aquatic plants and terrestrial plants different?

(N/A) $\rightarrow$ Generally, terrestrial roots show a network of branches that function to absorb water and minerals from the soil and to provide anchorage.
$\rightarrow$ In aquatic plants, modifications of their normal functions and deviations are seen. For example, in plants like $Trapa$ and $Tinospora$, roots are green and much-branched, which increases the surface area for photosynthesis. In plants like $Jussiaea$, roots become balloon-like (aerenchyma) to store air, allowing the plant to float on water and facilitating gas exchange.
$\rightarrow$ Differences between Aquatic Roots and Terrestrial Roots:

$1$. Aquatic Root	$1$. Terrestrial Root
$1$. Roots may be absent (e.g., $Wolffia$). If present, they are poorly developed, thin, and adventitious.	$1$. Roots are well-developed with root caps, root hairs, and branches.
$2$. Vascular tissues are less developed.	$2$. Vascular bundles are well-developed.
$3$. Modified for photosynthesis, buoyancy, and gas exchange.	$3$. Primarily for fixation and absorption of water and minerals from the soil.