Question

Why are aquatic plant's Root short and fibrous

Answer 1

The root of aquatic plants are short which enables them to float on water and also their roots are fibrous.

Hope it may helps u..!

Answer 2

Among terrestrial plants, roots have two major functions - obtaining water (as well as nutrients) and anchoring plants in place. (However, roots may have other important functions as well.) Aquatic plants obviously don't have a problem obtaining water. So roots presumably function primarily as anchors.

There are rootless plank-tonic plants that float on the surface of water bodies. However, aquatic plants like cattails and water lilies are probably a little more discriminating in their habitat preferences. Imagine a rootless water lily being blown by a hard wind into a patch of water lilies, which block out the sun.