Question
Biology Question on morphology of flowering plants
Which among the following is a rootless plant?
A
Nymphaea
B
Sagittaria
C
Ceratophyllum
D
Vallisneria
Answer
Ceratophyllum
Explanation
Solution
All the given options are hydrophytes in nature which grow in extremely wet or watery conditions. But among them only in CeratophyUum roots are completely absent even in embryonic stage. They remain under water completely. Nymphaea is a rooted hydrophyte with floating leaves, Vallisneria is rooted submerged hydrophyte and Sagittaria is rooted emergent hydrophyte.