Question

Why are roots of aquatic plants much reduced in size in aquatic habitats.

Answer 1

primarily they have abundant water in their reach and no need to look out for water as terrestrial plants. most of the aquatic plants, especially floating ones have adventitious roots with long root hairs to give balance. they have root pockets instead of root caps contrary to land plant roots

Answer 2

Aquatic plants are the plants that grow in water. Roots of the plants are the part of plant, which exists at its lower end. Soil or land plants have longer roots, because apart from anchorage their function is to absorb water and nutrients from soil. ... Hence, they have reduced root size.