You are examining a water sample from a pond which is full of water plants. You find an animal which is cylindrical and shows a long filamentous structure at one end. It is not stationary and shows variety of movements. It could:
A) Paramecium
B) Tadpole
C) Hydra
D) Amoeba
Correct Answer:
C
Solution :
Hydra shows a variety of movements and cylindrical in structure.